Wash, shell and de-vein shrimp.
Pat shrimp dry in paper towel.
Wash mushrooms in salted water, dry and slice.
Slice green pepper into strips 3 inches long and 1 1/2 inch wide.
Melt butter or heat oil until hut, add green peppers, sauté about 3 minutes
Add shrimp and sliced mushrooms.
Sauté about 5 minutes.
Season with salt, pepper and oregano.
Add Sauterne wine.
Sauté about 3 minutes or until shrimp are cooked.
Serve at once.