We all love tuna tataki, that gorgeous seared tuna coated in sesame seeds. Did you know that it's really easy to make at home? Make sure to ask for tuna loin. The fish shop that I went to was not my usual one and they sold me a tuna steak which was all wrong and necessitated another trip to the markets on Christmas Eve!
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Buyer's tip: I know I go on about oyster soy sauce (and it's definitely not oyster sauce but oyster flavoured soy sauce) but after discovering it in Japan I only use it for sushi and sashimi. You can buy it at Tokyo Mart for $6.20 a bottle and there is so much delicious umami flavour to it. I even gave it to friends for Christmas!
Step 1 - Season the tuna with salt and pepper and then roll the tuna in the mix of sesame seeds and then heat a non stick pan on medium high heat. Add a little oil (about 1-2 tablespoons). Sear the tuna on all sides for 40 seconds.Allow to cool completely. Slice up with a sharp knife.
Step 2 - Spread wasabi mayonnaise on a serving plate. Mix the soy sauce, ginger and red onion together and drizzle over the tuna and then top with red shiso.