English Onion Sauce

• 2 Spanish onions
• 2 tablespoons butter
• 2 tablespoons f

Boil onions until they are tender and drain them well, reserving onion liquor. Chop onions finely. Reserve. Melt butter in the top of a double saucepan. Remove pan from heat; stir in flour; return to heat and cook gently for 3 to 5 minutes, stirring constantly, until the flour is cooked through. Add milk, heated to boiling point, and cook over water, stirring constantly, until sauce starts to t