Clean the spring onions and cut into rings and chop the parsley leaves.
Fry the bacon in butter. Add the cleaned chanterelles and spring onions. Season with salt and pepper.
Whisk the eggs with nutmeg, salt and pepper. Stir in the mineral water.
Melt the butter in the pan. Add half of the egg mixture. Let it set over a low heat for 8-10 minutes. If you like, you can add some grated cheese to the omelette. Keep warm. Prepare the second omelette in the same way.
Place the chanterelles on each half of the omelette, fold the omelette and serve immediately.