Wash the fish, dab dry. Boil 1 litre of water with the broth and bay leaf. Poach the fish for about 7 minutes, remove and cut into bite-sized pieces
Peel and chop the shallots. Cut surimi into pieces. Wash the apple, grate dry, remove seeds and cut into slices. Pour lemon juice over the apple
Heat butter in a frying pan. Sauté the shallots and apple with lemon juice for about 3 minutes while stirring. Add curry and turmeric. Crush coriander seeds and stir in. Add crab meat, fish and surimi. Stir in 1 pack of béchamel sauce and milk. Season to taste with salt and pepper
Place 3 lasagne sheets in an oiled casserole dish (approx. 16 x 26 cm). Spread half of the fish mixture on top. Cover with 3 lasagne dishes. Add the rest of the fish mixture. Finish with 3 lasagne dishes. Spread the rest of the béchamel sauce over it. Bake in a preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: see manufacturer) for approx. 35 minutes.