Sometimes a Chantilly cake is referred to as a Gentilly cake. The main difference between a Gentilly cake and a Chantilly is the Gentilly cake typically has buttermilk rather than regular milk in the cake recipe. The frosting usually contains cream cheese and mascarpone frosting.  If you would like to use a buttermilk based cake rather than my vanilla cake, check out my white velvet buttermilk cake recipe.  The history of Chantilly cream is actually pretty interesting if you want to read more about the inventor but I won't bore you with all that here. I fully understand not everyone is a freakish food nerd like I am.