Sour, Like Milk

The kids and I celebrated the end of our school year with a trip to the local dairy. 

The folks there transform delicious, creamy milk into many flavors of gelato and cheese. Milk, when it is good, is very good, and when it is bad, it is, well, sour.

When milk goes sour at our house, we give it to the cat. It’s not good for much else. Whether it got too warm, was poured into a dirty container, or natural bacteria took over after the passing of time, no one wants to drink sour milk.

Whe...