Bò tái chanh is a classic Vietnamese dish made by briefly curing raw beef in a lemon marinade. Lemon-cured tuna makes a great pescatarian alternative to this easy dish. Whatever protein you use, it’s very quick to prepare once you have all the ingredients on hand, and it’s great as a starter, main course, or part of a shared feast. As the acid of the lemon ‘cooks’ the fish, slicing it thinly is important – so sharpen your knife before you start. It’s important to buy sashimi-grade fish for making lemon-cured tuna. Ask your fishmonger for saku-cut, which means a trimmed block that should already have all sinew removed and is a neat, even size for slicing. If raw fish isn’t your thing, pan-fry it first – just for a few seconds each side to sear it – then add it to the marinade straight away as it will absorb the flavours best while it’s still warm. Lemon-cured tuna is a simple dish that relies on a few key flavours, including spicy white pepper, so ensure it’s freshly ground and be generous – either measure the ½ teaspoon or give it a good 8-10 grinds of the pepper mill. While it’s always best to make your own deep-fried garlic and shallots, you can short-cut with good pre-made ones (it’s OK if you don’t have both too) and just use a teaspoon of vegetable oil instead of the garlic oil. The best is Tyrrell’s Vat 1 which is a great match for the complex flavours of fish sauce and Asian herbs in this salad.

Serves 2 as part of a shared meal

Ingredients

Lemon Marinade

  • ½ cup (125ml) strained lemon juice
    (about 1½ –2 lemons)
  • 1 tablespoon castor sugar (18g/⅔oz)
  • 2 teaspoons fish sauce (10ml)
  • ½ teaspoon crushed salt flakes
  • ½ teaspoon freshly ground white pepper
Method
  1. Trim any visible sinew from the tuna and discard it. Place tuna in a sealed bag in the freezer for about 1 hour to firm it up (taking care not to leave it so long that it freezes solid).
  2. Finely slice tuna, mix through Lemon Marinade, push the pieces down gently so they’re all submerged and set aside for 10 minutes.
  3. Meanwhile, line a platter with betel leaves.
  4. Drain tuna, squeezing very gently to remove some of the excess liquid; discard the Lemon Marinade.
  5. Add lemon-cured tuna to Herb Salad and toss gently to combine well.
  6. Arrange on top of the betel leaves.
  7. Drizzle with Sweet Fish Sauce and sprinkle with peanuts.
  8. Serve immediately with rice and chilli on the side
  9. To eat, wrap a piece of tuna with some salad and chilli in a betel leaf.

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