Why does Buttermilk mage great ice cream?

buttermilk is 99% fat free, yet thick and slightly sour

buttermilk lends an amazing richness and tangy flavor

Tart buttermilk balances the sugar, while vanilla provides that familiar, woodsy-sweet aroma

Buttermilk gives ice cream a fresh, tangy flavor not unlike frozen yogurt, but leaner and therefore even more refreshing