Stay Soft Icing
["1/4 c. cocoa", "3/4 c. sugar", "2 Tbsp. cornstarch", "1/2 c. evaporated milk", "1/2 c. water", "1/2 tsp. vanilla", "2 Tbsp. butter"]
["Mix cocoa, sugar and cornstarch together in a pan. Add milk and water.", "Cook until thick. Remove from heat and add milk and butter.", "Stir."]
["cocoa", "sugar", "cornstarch", "milk", "water", "vanilla", "butter"]