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teriyaki portobello mushroom burgersI’m having a bit of a rough day. Relatively speaking. Although I am sitting here with two purring cats vying for attention (read: my lap), what I really want to do is go for a wee lie down. Maybe have a wee cry. Do you ever feel that way?

I know it might sound a tad cheesy but everyday I do some form of blessing counting. Not a formal conversation with myself, just a silent rolling recap of all the good things I have in my life.

Happily the list is mighty long, and I’m still a grateful person, but some days you just can’t shake off the glums. Maybe it is the suddenly cooler weather and return of glowering, grey skies. Or maybe it’s the maddening clusters of itchy  bites received while picking black currants for jam and the freezer. The self-infllicted bruise on my cheek (don’t ask) isn’t helping much either: I frightened the postman.

I realise these are small-beer complaints, but you might sympathise with what I think I am really blue about. My Miss R is away. Not away for the day, or to some place nearby and textable. No, she is away away. To the Honduras rainforest and northern coast on a research trip, and has been for a week so far, with another week and a half to go. While her Dad and I are here pining her absence and seeking solace in the comfort of cats, Miss R is having the time of her life: counting bats, measuring lizards and SCUBA diving with (and counting) rare fish. She is undoubtedly making lifelong friendships too. An amazing opportunity for a 17-year old.

This is our only child Miss R’s third adventure away this summer, and not the first time she has been uncontactable. But somehow this feels different. I guess what I am feeling is the beginning of empty nest syndrome. One year of schooling to go and she is off. Making it all the more real and tangible is the fact that the (frightened) postman just delivered her Higher exam results. I will leave them – unopened – on her bed. Her bed fringed with pop star posters and encouraging quotes; neatly made-up, just as she left it. I might just go and have a wee lie down up there.

I apologise (a little) for the self-indulgent post – but you still get a recipe! And despite the soggy preamble today’s recipe is not glum.  You do not need to be sobbing into your child’s sweetly-scented pillow to appreciate it. It is just plain good, and easy. Miss R has already given it her seal of approval. She highly recommends the homemade wasabi mayonnise too ;D Enjoy.

teriyaki portobello mushroom burgerJuicy Teriyaki Portobello Mushroom Burgers with Homemade Wasabi Mayo

Last year: Prawn, Pepper and Parsley Pesto Pizza with Chili-Chard

Two years ago: Turmeric and Lime Salmon with Baked Lime-scented Rice; Peach, Honey and Lavender Tart 

Track of the week: Way In The World by Scottish up-and-comer Nina Nesbitt

Shove those meaty burgers out of the way and make room on the grill for these deliciously meaty mushrooms. Bathed in a quickly-made teriyaki sauce and grilled slowly – the key to juicy and tender ‘shrooms – these ‘burgers’ deliver on taste, nutrition and ease. Slapped on a good bun, slathered with (homemade) wasabi mayo and topped with sprouts and grilled red onion…bliss. Fries, optional. Napkins, obligatory.

Oh yeah. I haven’t tried these with my jerk marinade but that is next on the list, with Gluten-free Goddess shoestring sweet potato fries and pineapple salsa. Mmm.

Makes 4 ‘burgers’ and one pot of mayo

Teriyaki Marinade 

4 tbsp soy sauce, shoyu or tamari sauce

2 tbsp apple cider vinegar OR mirin

1 tbsp honey (I like acacia)

1 tbsp grated gingeroot

2 garlic cloves, grated or finely minced

1 tsp wholegrain mustard

The rest

4 portobello(a) mushrooms, wiped cleaned (no washing) and stems removed

2 red onions, thickly sliced (see images)

Fresh sprouts of your choice (I used pea)

Shredded lettuce

Best quality breadrolls

Wasabi mayonnaise (see below) – make while the mushrooms marinate

1. Whisk together the marinade. Place the mushrooms into a large ceramic dish and pour over most of the marinade. Toss the mushrooms and marinade with your hands. Brush the rest of the marinade over the onion slices and place the slices in the dish. Cover and leave for 15 minutes to one hour. Meanwhile, make the mayonnaise, or mix good quality mayonnaise (I like Delouis and Stokes) with a little wasabi paste – to taste. If you remember, give the vegetables a turn during the marinading time.

2. When you are ready to cook, fire up a stove-top ridged griddle pan over a medium flame, brushing with a little oil. If you are grilling outside, keep the vegetables to the side of the main heat source,  allowing the mushrooms and onions to grill slowly.

3. Shake off and save the excess marinade;  place the vegetables on the griddle. Cook over a medium heat for about 5-8 minutes on one side, then turn down the heat a little and cook for a further 7-10 minutes. Baste with the leftover marinade or a little oil if the vegetables look in the least bit dry. Because of their sugar content, the onions will undoubtedly be cooked before the mushrooms, so rescue them before they colour too much. Dark grill marks and a shiny sugary surface is fine, but burnt is not a good look, or eat.

4. Assemble the burgers, using the suggested toppings or your own imagination – grilled pineapple or courgettes, ripe tomatoes, avocado, radishes. You could even eschew the bun altogether and wrap a large lettuce leaf around the mushroom and tuck in.teriyaki portobello mushroom burger

Wasabi Mayonnaise

(adapted from my Chipotle Mayonnaise recipe)

1 medium organic egg

¾ tsp best Dijon mustard

1 ½ tsp caster/super-fine sugar

½ tsp salt

2 garlic cloves, peeled

2 tbsp apple cider vinegar

400 ml rapeseed/canola oil

Wasabi paste, to taste OR grated horseradish (although I fancy ordering ‘the real thing’ from British the wasabi company next time)

Pop the first six ingredients into a blending jug. Using a hand/immersion blender, process a little and then start adding the oil in a slow, steady trickle. Once it starts to thicken (the sound from the blender will deepen a little), pour more rapidly until it is completely amalgamated. If you want a less stiff mayo – more of a sauce – you may not need all of the oil. At this point you can add in the wasabi/horseradish, or take some out and blend it in by hand. teriyaki portobello mushroom burgerwasabi mayo

teriyaki portobello mushroom burger

65 thoughts on “Juicy Teriyaki Portobello Mushroom Burgers with Homemade Wasabi Mayo

  1. bina says:

    looks delicious and will be def an ispiration for my food-collection:

  2. juliacastorp says:

    looks great

  3. On my “dreams” board I have the idea for a restaurant called “The Good Karma Cafe” (damn now someone will steal the name) When I get $1 million, I am going to fly you out to teach my chef how to make this and about 50 other recipes that I’ve saved from you.
    I just discovered pea sprouts! They make my morning smoothie so sweet I want to cry.
    Recipes like these…..Keep em coming!

    1. What a lovely thing to say Susan. Get playing the lottery! I’ll be over 😀

  4. riadlinda says:

    Thanks for the fab recipe Kellie -sorry that you’re feeling ‘blue’. When my daughter was about to go to university I felt like that too, but once she was there & I knew that she was happy it was much easier!

    1. I’m better already and without any crying either 😀 I know it is all inevitable. I guess the price you pay for having a wonderful relationship with your children is that is all the more painful when they go. It is selfish feeling this way, but I guess it is only natural.

  5. I wish I like portobellos! This looks so good!

    1. Hey, try the basic idea with courgettes/zucchini. That would work just fine.

      1. Oh my gosh…I don’t like zucchini either (or eggplant). It’s more textural than taste. Maybe butternut squash or yams?

      2. Ooh lateral thinking. I like it!

  6. Lisa says:

    This is so beautiful! The bun looks really unique too 🙂

    1. Not mine, I’m afraid. They are sunflower sourdough rolls from my awesome post office, which doubles as a gourmet food shop and bakery. Local businesses rock!

  7. We all have days like that, and sometimes the only way to deal with it is a good cry. I’m sorry you’re having one of those days.

    It looks as though we both have portobello mushrooms on the mind. Pairing them with teriyaki and wasabi flavors is brilliant!

    1. Thanks. I am feeling better with a little therapeutic blogging and the return of the sun. I had a look at your recipe and it looks so good -black beans and spices, mmm

  8. Oh no, I totally feel for you, I am missing her too! (we are talking lots about what she is up to over dinner). My lads are coming with us to the Cameo tomorrow so you can share them with me 😉
    Beautiful pics and recipe sounds like it will pack a huge punch, lovely.
    See you tomorrow x

    1. Cheers my lovely Miss Niki. I look forward to seeing you and the boys tomorrow. Your sky-scraping boys – how will they fold themselves into those narrow Cameo seats?

  9. lynnduong says:

    That looks absolutely amazing! Good job 🙂

  10. No words 🙂 I’m in love!

  11. Emma Coltart says:

    Kelli my friend, I believe a good cry heals all aching hearts, it always works for me. I can’t think of anything better than a wee cry mixed with your scrumptious recipes……bring it on!!! Xxxx

    1. Oh Emma, thank you. No crying here. Luckily I have my cooking for the groups to keep my on track. But I will go and flop on Miss R’s bed for a little rest at least. My feet are killing me! I hope you are well and enjoying a great East Lothian summer. We were at Tyninghame recently and wanted to just live on the beach. It was just stunning and so unspoiled.

  12. mouth is watering! looks yummy!!!!

  13. Portobello mushrooms are such a good option for meat!

  14. mataicooking says:

    Schaut gut aus, schmeckt sicherlich auch so . . .

    1. I just popped your comment into a translator, afraid that it might not have been complimentary 😀 Thanks for your very kind comment!

      1. mataicooking says:

        100% compliment . . . :-)))

      2. Thank you! I WAS nervous though 😉

  15. coastalcrone says:

    These look wonderful! Getting busy helps when you are missing someone.

    1. Luckily I’ve been busy as that does certainly help. But I keep getting pangs of longing. That poor child is in for one big hugging extravaganza. Nice to hear from you.

  16. you post such mouth watering photos, you’re making me feel hungry even though I’ve just eaten my tea!
    Glad you made it to the end of the day feeling a bit less empty. I too am craving a lie down and didn’t realise I needed a wee cry until someone was mean to me. Sounds daft doesn’t it saying that as an adult but we get so good at holding it all together it’s that final straw that breaks the camels back. I was mightily glad to get home to my toddler for a cuddle and a play – just think how fabulous your reunion will be when Miss R gets back.

    1. Oh gosh, I’m sorry you’ve had a bad day too. If you give me their address I can maybe go over and let down their tires… Seriously, I hope tomorrow’s better for you. Make yourself some nice cookies and eat them all yourself (a wee share with your toddler is okay though)

      1. I love your sense of humour Kellie :o) tomorrow will be fab – just hanging out with my little fella, perhaps we’ll do a some baking…. Have a good one too x

      2. Enjoy your day. I hope it is sunny and you can get out and about with your wee man. And find time for baking too 😀

  17. Hi Kellie – you don’t look old enough to have a 17 year old daughter! That has to be something to smile about. ;-D Must be all these fabulous healthy recipes you create… This one looks gorgeous.

    1. Well I think I’m old enough for a much older child. I was told when I was pregnant that I was an ‘elderly primagravida’. Now *that’s* depressing! Thanks for the kind thought though. I blame my mother. She had good skin, bless her. And I eat a hell of a lot of kale too 😀

  18. priya7011 says:

    That looks healthy and delicious!!

  19. Helen Portas says:

    Holly Golightly in Breakfast at Tiffanys called that sort of day ‘The mean reds’ and advised a quick trip to Tiffanys to pick her up. Your recipes provide a much cheaper option!! I am a relatively newcomer to your wonderful website and have recommended it to all my foodie friends! Thank you for all your inspirational cooking tips and ideas! I’ve been hard at work trying them out – much to my husband’s delight!

    1. You know, that’s one movie I haven’t seen. Can you believe that? Yes, a nice simple recipe with lots of scrummy juices and pep is just the thing to lift the spirits. Better yet if someone else makes it or washes up though! Thanks so much for your sweet and encouraging comment. And of course for the recommendation to your friends – that’s brilliant 😀

      1. Helen Portas says:

        Not seen Breakfast at Tiffanys?? This is definately one for a rainy day..along with Roman Holiday. The best Audrey Hepburn film of the lot. I recommend it whilst the sun is still shining, campari in hand, wearing vintage – watch it and you’ll see why! Enjoy and glad I can recommend something back to you, after all you’ve shared with us, via your site!

      2. Rainy days are on their way so I will make an appointment with my sofa for an Audrey-fest. Thanks for the advice! I tend to like modern ‘world’ cinema but I do need educating on older lighthearted movies too 🙂

  20. Ann says:

    We know just how you feel! You will find that the Cameo has been recently refurbished and the seats even recline now.

  21. Sorry to hear you are feeling a bit down Kellie but it will be short lived and while there are succulent portobello mushrooms on hand, your attention can be somewhat diverted 😉 Hope your daughter is happy with the results when she opens them – I can still remember trembling when I opened my Higher results!

    1. My husband and are amazed that we have resisted the temptation to steam open the envelope. But we are rubbish at secrets and subterfuge so it’s just as well! I hope you are well. I really missed seeing you at FBC, btw x

  22. Looks fantastic, I will be trying this soon!

  23. Vanesther says:

    These burgers looks simply gorgeous – my mouth is watering at the beautiful photographs!

    1. Thanks so much, Vanesther. I always have to take a zillion photos to have even one that might be presentable and in focus!

  24. narf77 says:

    The feeling goes…we avoided it completely by leaving the nests ourselves! First we left our son in our home town when we moved to Tassie and then we left our daughters in our old house when we moved here…hows about moving away and leaving Miss R the house? I am sure she won’t complain! 😉 Burger delish, mayo, adaptable and delish, music, not bad all in all a good post. Hope you are over your melancholy blues soon. They will evaporate when Miss R, full of holiday cheer and youthful radiance walks through the door :).

  25. This looks marvelous. Going to make it this weekend for guests. And hang in there. Miss R will be back soon, with marvelous tales, I’m sure.

    1. Awesome! I’m am very flattered 😀 I hope the meal goes well. Do you know what you are having with it? I would love to know your menu.

  26. Oh my goodness, love the colors! The teriyaki marinade looks delicious that even meat lovers would enjoy! Can’t wait to try this out.

  27. Urvashi Roe says:

    I can’t imagine how you feel and dread the day my girls are away. Big hugs lovely and thank you for the portobello inspiration. Gorgeous images.

    1. Thanks Urvashi. That means a lot to me. I can’t wait for my house to be noisy again! You are a long way off from this. Make the most of every moment (I’m sure you do). I wish I could could slow the clock, freeze special moments. But I’m looking forward to seeing the wonderful young adult she becomes. How slushy am I?!

      1. Urvashi Roe says:

        Very slushy! xxx

  28. lararothman says:

    This looks so yummy!

  29. Jane Doe says:

    This looks delicious! Thank you for the recipe and best wishes for your Miss R.

    1. Thanks so much. Thursday’s reunion with her cannot come soon enough. And I hope you get a chance to make the mushrooms

  30. portobello mushrooms give the perfect texture and flavor to burgers…this looks stunningly good…wasabi mayo makes for such a delicious combo with these burgers, yumm 🙂

  31. Great recipe. Funnily enough I had tempura prawns with wasabi mayo last night – and I loved the wasabi mayo so it’s great to have a handy recipe. x

  32. Sally says:

    Virtual hugs. My 17 year old is about to go away on a girl’s holiday next week. I am feeling incredibly jittery.

    1. It’s funny that everyone goes on about how hard it is to be a parent of young children. I think it’s definitely harder when they are testing their wings but still need your support and guidance. Fine line. Good luck keeping yourself distracted! And hugs back 🙂

  33. Hooray! Food! says:

    Mushroom burgers are the BEST! This looks fantastic. Thanks for sharing!

  34. It sounds like you have snapped out of your funk, but go ahead and have a good cry if you need one-nothing wrong with that at all! It sounds like a fabulous trip that Miss R is having, but I’m sure she is missing you a little bit too 🙂 Mouth wateringly delicious looking veggie burger here-I might even toast up a GF bun to go with it!

  35. Ah Kellie I can imagine it must be hard. She is always going to be your baby even when trekking the honduras and doing research. Love this recipe – and the wasabi mayo is a great idea with it. I have a new barbecue so this is one I shall be trying out

  36. Fiver Feeds says:

    Yum, yum, yum…what a delicious burgers!

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