"For the record: Sherbets may contain some dairy, unlike sorbets, which do not...."
INGREDIENTS
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4 cups strawberries (about 1 pound), hulled, halved or quartered if large
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1 cup sugar
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1/2 vanilla bean, split lengthwise
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1 1/2 cups buttermilk
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1/3 cup sour cream
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Pinch of kosher salt