Happy Pi Day! - No. 197

Let’s make some chocolate whoopie pies.

Chocolate Whoopie Pies from my book, American Cookie. Photo: Mitch Mandel.

JUST AS I WAS DUSTING OFF Irish bread recipes and admiring my green leprechaun hat in the mirror, I realized it’s Pi Day.

The day math nerds wait for, and three days before St. Patty’s. The green beer will have to wait. I’ve been hoping this newsletter might fall on Pi Day even mor…