I could never draw cows when growing up, even though I lived on a farm and was surrounded by them. I tore up a lot of drawings. Now I enjoy drawing cows — they’re funny-looking, bony, expressive. Writing this book may have been an excuse to draw cows, as well as an excuse to drive to Point Reyes. Point Reyes is a rolling peninsula north of San Francisco with dairies tucked in its hills. I spent weeks there. Later I went to the Clover Stornetta co-op in Petaluma to see milk separated from cream. Then I went to the Dreyer’s ice cream factory in Hayward to see ice cream making. It was a cool process following the milk trail. I had great appreciation for ice cream before writing this book and that has not changed.

