Mix the sugar and cornstarch in a saucepan. Add the chocolate and salt. Add boiling water. ... for a glossy frosting which remains soft and smooth. Frosts sheet cake. Double for layer cake.
Ingredients: 7 (cornstarch .. salt .. sugar .. vanilla ...)
Sift together flour, sugar, cocoa, ... milk and sugar. Boil 2 minutes. Remove from heat and add chocolate chips. Beat until of spreading ... on top of filling.