Mushroom Gravy

2 cups potato water
1 large white mushroom chopped
half onion chopped
1 tablespoon butter
2 crushed fresh oregano leaves
pinch salt
pinch black pepper
1 tablespoon flour
1 cup water


Start by putting the potato water in sauce pan with the mushroom and onion boil for 3 minutes, as it is reducing add butter until melted, then add black pepper and oregano, stir and continue to boil on low heat for another 6 minutes then add salt and flour. Keep stirring adding water. Simmer another 5 minutes.

This will be a light coloured gravy, if you wish to add browning then feel free.