A quick easy marinade for grilled tuna steak doesn't come much simpler than this and the fresh flavors are absolutely awesome. What I also like about this recipe is the colours, tuna is such a fresh concept that the vibrant colors of this marinade really work to bring the dish alive!
The best way to eat a tuna steak in my my book is straight off the searing hotplate of your grill, the marinade takes 10 minutes to put together, the tuna takes a couple of minutes to sear so if your already hungry, you could have this one served up in the next 30 minutes. So what are your waiting for?
Just a quick note on this one. I've used a fresh green chili but feel free to substitute chili flakes or why not color it up a little more with a fresh red (usually hotter) chili?
TIP - Lime juice is great addition to this recipe but use it to drizzle on the cooked tuna or squeeze it over as you cook. Don't put it in the marinade otherwise it will start to "cook" the fish - it actually denatures the proteins on the surface of the steak. Cooking the tuna has the same effect to denature the proteins but because no heat is applied when adding lime juice it's not technically "cooking".
Yield:- ¼ cup or 60ml
Preparation Time:- 10 mins
Marinade Time:- 10 minutes
Cooking Time:- 4 minutes
Total Time:- 24 minutes
No processed ingredients in this marinade so there's no allergens to speak of. Without wanting to state the obvious however, this is a marinade for grilled tuna and tuna contains fish!
Take a skillet and lightly toast the coriander seeds for a couple of minutes until they are fragrant taking care not to burn them. Then grind them up in a pestle and mortar.
Chop the coriander leaves and chili and throw everything into a marinade bowl with the salt and olive oil.
Place your tuna steaks in the marinade, ensure that they are covered and put to one side for 5 minutes, then turn your tuna steaks and give the other side 5 minutes.
There's no need to refrigerate during the marinade time. In fact it's better to get your steaks fully up to room temperature before cooking, that way the middle of the steak won't be too cold.
This marinade for grilled tuna steak doesn't take long, just 5 or 10 minutes (read my article about the science behind marinades to understand why) so warm up your hotplate and complete your grilled tuna steaks. For me it's just 2 minutes on each side so that the outside of the steak in cooked but the inside is still completely raw.
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