3 pounds medium Yukon Gold potatoes |
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1/2 cup finely chopped fresh chives or green onion tops |
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1/2 cup chopped fresh parsley |
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2 tablespoons drained capers |
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3 tablespoons white wine vinegar |
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1 tablespoon caper liquid from jar |
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1 teaspoon coarse-grained Dijon mustard |
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1/2 cup extra-virgin olive oil |
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