Task: Question Answering
Input (English): how to make hot chocolate
Output (English): Combine the cocoa, sugar, water, and salt in a medium saucepan, then over medium heat, stir constantly until the mixture boils. Cook, stirring constantly for 1 minute.    Stir in the milk and heat, but do not boil.    Remove from the heat and add vanilla; stir well. Serve immediately.