There are a range of dairy milks and milk alternatives that are delicious in a hot cocoa cocktail. For a dairy-free option, use soy, almond, oat, hemp or any non-dairy milk of choice in place of the whole milk below. Coconut milk is delicious and creamy too, and the coconut flavor will add another dimension to your drink. To create dairy-free whipped cream, substitute coconut milk for the heavy cream.