1. In a medium pot over medium-low heat, warm half-and-half. When steam or bubbles appear around edges, add chocolate and whisk constantly until fully melted. 2. Whisk in milk, sweetener, vanilla, peppermint, and food coloring. Simmer for 5-8 minutes, stirring regularly, until cocoa is heated through. 3. Pour into mugs, and top with whipped topping and peppermint candies.