Nicola Twilley takes a cold plunge into the history of refrigeration. Lucas Sin explains how to use the freezer to improve cooking. Adrienne Borlongan jettisoned a career in nursing to explore ice cream production. For two decades, Michael Buch has watched Silver Lake change around his shop, Pazzo Gelato. At the farmer's market, Elaine Marumoto-Perez and her brother use apricots to make ice cream and donate portions of each pint to charity.