In this task, you will be presented with the directions of a recipe separated by "," and have to fill in the "___" which is a step that is missing from the recipe.
Q: Mix sugar, cornstarch and salt in heavy saucepan until well mixed.,Whisk in evaporated milk and egg yolks.,Place over medium heat; whisk in hot water slowly.,______,Stir in coconut, butter and vanilla; and stir until smooth.
A:
Cook, whisking constantly, until mixture comes to a boil and thickens enough to stand a spoon in. Remove from heat.