Jam jar coffee is the easiest way to make a latte at home—just use your nearly empty jam jar! Mix espresso with leftover jam, top with frothy berry cold foam, and enjoy a sweet café-style drink without the waste.
Brew espresso and add to jam jar with ice and top with ice.
In a separate cup add cold foam ingredients and froth with a hand frother until foamy. If you do not have a hand frother you can put the ingredients in a jar with a lid and shake.