Kreung Aguachile Tostadas on a warm neutral surface

Kreung Aguachile Tostadas

Raw yellowtail, cucumber and avocado on tostadas, with a lime and kreung marinade, salsa macha and peanuts.

From my kitchen

Cooking notes

1

Temperature is everything

Keep the fish ice-cold and the tostada at room temperature. Assemble just before serving.

2

Don't skip the crunch

Add crushed peanuts just before serving for crunch.

3

Smart substitute

Can't find yellow kreung? A good Thai yellow curry paste works, though it is slightly less citrusy.

4

Food safety

Buy fish intended for raw preparation from a trusted supplier, keep it cold and serve right away. Lime juice does not make raw seafood safe; use cooked seafood for anyone at higher risk.

What you need

Ingredients

The base

  • 1 lb
  • 4

The kreung aguachile marinade

  • 1/2 cup
  • 2 tbsp
  • 1 1/2 tbsp
  • 1 tsp
  • 1
  • 1 to 2

Toppings and assembly

  • 1 large
  • 1/2
  • 1/4
  • 2 tbsp
  • 1/4 cup
  • To garnish

Taste the marinade first. It should be a punchy balance of sour, salty and spicy with a faint herbal sweetness from the lemongrass and sugar.

How to make it

Method

  1. Make the marinade for Kreung Aguachile Tostadas

    Make the marinade

    In a blender or mortar and pestle, combine the lime juice, kreung paste, fish sauce, palm sugar, serrano and Thai chilies. Blend until completely smooth. It should be a smooth, pourable liquid.

  2. Slice the fish

    If using hamachi, slice into 1/4-inch thick rectangular pieces, sashimi style. If using shrimp, butterfly them down the back so they lay flat. Keep the seafood ice-cold until the moment of assembly.

  3. The quick cure

    Place the sliced seafood in a shallow bowl. Pour about half the marinade over the fish and let it sit for only 2 to 3 minutes. Unlike traditional ceviche, aguachile is served while the fish is still raw in the center.

  4. Build the tostada for Kreung Aguachile Tostadas

    Build the tostada

    Spread a generous layer of avocado puree onto each tostada; it acts as the glue. Layer 4 to 5 cucumber slices over the avocado, arrange the cured fish or shrimp on top, then spoon another tablespoon of fresh marinade over it.

  5. Finish for Kreung Aguachile Tostadas

    Finish

    Top each tostada with shaved red onion, a drizzle of salsa macha and a sprinkle of crushed peanuts. Finish with mint, cilantro and micro-greens.