Is This America's Best Butter?

Diane St. Clair makes butter for some of America's best chefs, including Thomas Keller. CNNMoney's Katie Quinn finds out why it tastes so good.

May 22, 2015

Diane St. Clair makes butter for some of America's best chefs, including Thomas Keller. CNNMoney's Katie Quinn finds out why it tastes so good.

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