Coarsely chop the jalapenos, removing the seeds if less heat is desired (use 1 jalapeno if you prefer less heat). Crush or coarsely chop the garlic. Coarsely chop the coriander, including the stems. Blend the jalapeno, garlic, coriander, 1 tbs water and 2 tsp olive oil with a stick blender until almost smooth. Season with salt.
Step 2 — Prep ingredients
FISH OPTION Finely chop the onion. Cut the fish into 2cm chunks. Crumble 1 stock cube* into a heatproof jug, add 250ml (1 cup) boiling water and stir to dissolve.
Step 3 — Cook onion and rice
Heat 2 tsp olive oil in a large frypan over medium heat. Cook the onion, stirring, for 3 mins or until starting to soften. Stir in the rice until well coated.
Step 4 — Add chilli paste
Stir the chilli paste and stock into the rice mixture, then bring to the boil. Reduce the heat to medium and cook, covered, for 8 mins. Add the fish and cook, covered, for a further 6 mins or until the rice is almost tender and the fish is almost cooked through. Remove from the heat and stand, covered, for 5 mins.
Step 5 — Make lemon yoghurt
Meanwhile, finely grate the zest of half the lemon, then juice the half. Cut the remaining lemon into wedges. Combine the yoghurt, lemon zest and 1 tbs lemon juice in a bowl and season with salt and pepper.
Step 6 — Get ready to serve
Stir the spinach into the fish mixture until wilted. Taste, then season with salt and pepper. Divide the fish mixture among plates. Serve with the lemon yoghurt and lemon wedges.