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Rhubarb: Pie Plant

Because it’s usually paired with strawberries and made into pie, rhubarb is often mistaken for a fruit. Actually, it’s a vegetable, and though very tart and astringent, sugar transforms it into dessert. Buy it red or green: The color doesn’t indicate ripeness or affect the taste. Slice rhubarb thinly across the grain to reduce stringiness. Don’t eat the leaves; they are poisonous.

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