I feel like a histogram or line chart would be better for displaying popularity of the drinks rather than the heatmap, given that there are no patterns appearing in terms of day of month.

The pattern here is the popularity over the months i.e. classifying a summer/winter drink

Caramel Brulée Latte, Caramel Ribbon Crunch Frap... Damn, that sounds nasty. I'm sure they are calorie bombs as well. Can I recommend a nice cup of coffee-flavored black coffee?