Ingredients

The following ingredients have 3 Servings
  • 5 Tablespoons unsalted butter
  • 4 cups yellow onion (chopped fine)
  • salt and pepper
  • ¼ teaspoon cayenne pepper
  • ⅓ cup water
  • 1 ½ Tablespoons balsamic vinegar
  • 2 ½ cups sour cream
  • chopped chives (for garnish (optional))

Instruction