Why do you add cornstarch to hot chocolate?
Cornstarch acts as a thickening agent that creates a velvety, luxurious texture and helps the hot chocolate coat the spoon rather than being thin and watery.
Can you make this hot chocolate ahead of time?
Yes, you can prepare the chocolate mixture up to 2 days ahead and refrigerate it. Reheat gently over low heat or on the stovetop, stirring occasionally, then add milk when serving.
What's the best way to avoid lumps when adding cornstarch?
Mix the cornstarch with a small amount of cold milk first to create a slurry before stirring it into the warm chocolate mixture.
Can you use all dark chocolate or all milk chocolate instead?
Yes, but the combination of dark and milk chocolate provides balanced flavor and richness. Using only dark chocolate will taste more bitter; only milk chocolate will be sweeter and less complex.
How thick should the finished hot chocolate be?
It should be thick enough to coat a spoon but still pourable. If too thick, add more milk; if too thin, mix additional cornstarch with cold milk and stir in.