INGREDIENTS
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2 lbs Yukon Gold potatoes, scrubbed and cut into ¾-inch chunks
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3 tbsp. olive oil, divided
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1½ teaspoons kosher salt, divided
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Freshly ground pepper
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2 medium shallots, thinly sliced (about ¼ cup)
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2 cloves garlic, roughly chopped
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⅓ cup sour cream
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1 tsp. Dijon mustard
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1 tsp. red wine vinegar
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2 tbsp. chopped fresh flat-leaf parsley