Wash and sort the spinach and drain well. Clean and trim the mushrooms and cut or slice them thinly. Cut avocado in half, remove flesh from skin, remove stone. Cut avocado into slices and sprinkle with 2 tablespoons lime juice
Cut bread into cubes. Wash shrimps and pat dry. Melt butter in a pan, roast bread in it while turning, take out. Heat 2 tablespoons of oil in the hot pan. Fry the prawns for 3-4 minutes, turning them over. Season with salt and pepper, put aside
For the sauce, mix yoghurt with 1 tablespoon of oil, lime zest and 4 tablespoons of lime juice. Depending on the thickness of the sauce, stir in milk. Season to taste with salt, pepper and sugar. Arrange the salad ingredients on plates and drizzle with the sauce. Garnish with chervil. Add the rest of the sauce