white fish fillets (e.g., cod, haddock, or tilapia) • rice (jasmine or basmati) • carrots, peeled and sliced • fresh spinach • onion, finely chopped • garlic cloves, minced • coconut milk • yellow curry powder • vegetable stock cube • oil (e.g., sunflower or olive oil) • Salt and pepper, to taste • lemon or lime, cut into wedges (for serving)