What triggers a desire for icecream?

After buying groceries, as I was waiting outside the store, I saw a mom eating her 'butter pecan or chocolate chip cookie dough' icecream in a cone followed by her kids eating chocolate icecreams. That prompted us to walk into 'Water and Ice' and down the butter pecan icecream. Now I know where an elderly person bought the cone which diminished to a tip as he entered the grocery store. While we were learning what a 'cake cone' was, which is nothing compared to a waffle cone, my eyes fell on bee pollen, an ingredient in a healthy smoothie.