Fried Eggs with Wine Vinegar

Name: Fried Eggs with Wine Vinegar (Oeufs au plat avec la giclée de vinaigre de vin)
Yield: For two people
Cuisine: French
Ingredients: salt, pepper; 4 tablespoons good wine vinegar; 30 g (1 oz) butter; 4 large brown eggs (6 if you enjoy them as much as I do); salt, pepper