Quick Fudge Frosting
["1 lb. (4 c.) powdered sugar", "1/2 c. cocoa", "1/4 tsp. salt", "7 Tbsp. boiling water", "1 tsp. vanilla", "6 Tbsp. soft butter"]
["In large bowl of mixer, stir together sugar, cocoa and salt. Add boiling water, vanilla and soft butter.", "Stir together, then beat until smooth and light.", "This frosting will seem thin at first but thickens while beating.", "Makes about 3 cups.", "Can be stored, covered in refrigerator.", "When wanted, let soften at room temperature before spreading."]
["powdered sugar", "cocoa", "salt", "boiling water", "vanilla", "butter"]