Select the best chocolate for your hot chocolate, as that can bring the difference between flavour and texture. Milk, dark, ...

That is, you don't think about it until you find a recipe that calls for something specific, like black cocoa powder. This ...

To maintain optimum freshness, store cocoa powder in an airtight container in a cool, dark, and dry spot in the kitchen. Cocoa powder can typically be stored for up to two years.