Definition: In this task, you have to generate the title of the recipe given its required ingredients and directions.
Input: ingredients:  '1 1/2 cups semi-sweet chocolate chips', '1/2 cup butter, room temperature', '2/3 cup milk', '1 teaspoon vanilla', '1/2 - 2/3 cup confectioners' sugar',<sep> directions: 'Combine the chocolate and butter in a small heavy saucepan and melt over very low heat.', 'Remove the pan from the heat, stir in the milk and vanilla, and transfer the mixture to a mixing bowl.', 'Add the sugar gradually, beating with an electric mixer. Continue beating until the mixture is smooth--it will be runny.', 'Refrigerate the mixture for 1 hour, beating every 15 minutes. (The icing will stiffen.).'

Chocolate Buttercream Icing