Separate eggs. Beat egg whites and 1 pinch of salt until stiff. Add a little pepper. Mix the egg yolks and 1 teaspoon of lemon juice and fold into the egg whites. Spread a thin layer of oil on 2 coated pans and heat up briefly.
Pour in half of the dough each time, put the lid on and bake at low heat for about 20 minutes. In the meantime, peel and wash the carrots for the filling. Clean and wash the mangetouts and mushrooms.
Cook the carrots in boiling broth for about 10 minutes, the sugar snap peas for 4 minutes. Drain the vegetables, keep the stock. Halve mushrooms and fry them in hot fat. Deglaze with the stock, bring to the boil briefly.
Stir in the crème légère. Thicken with sauce thickener. Warm up the prepared vegetables in it. Season to taste with salt, pepper and lemon juice. Fill the omelettes with the vegetables and fold them over halfway. Serve garnished with chervil and lemon.