Sienimunakas-kääryle Recipe - Mushroom-omelette roll from Finland

Ingredients

• 6 eggs
• 5 dcl milk
• 1 dcl wheat flour
• 1 tsp salt
• 0.5 tsp white pepper
• 3 tbsp butter, margarine or cooking oil
• 1 liter chanterelles, hedgehog mushrooms, ceps
• 2 – 3 onions
• salt
• black pepper
• basil or thyme
• a little cream or crème fraîche
• grated cheese