1. Fry the flour in the pan until slightly yellow, add butter and stir fry evenly
2. Heat butter in the pan, add onion and stir fry
3. Pour the mushrooms and stir fragrantly, pour the white wine
4. Add water, pour milk and cook for 20 minutes
5. Pour the cooked mushroom soup into a wall breaker, crush and filter
6. Stir in the strained mushroom soup into the butter noodles
