Ingredients
2 pounds mixed baby potatoes (Yukon Gold, red, etc.)
1 cup plus 2 Tbsp. white vinegar
2 tablespoons unsalted butter
1 tablespoon kosher salt, plus more
2 tablespoons olive oil
Freshly ground black pepper
2 tablespoons chopped fresh chives
Flaky sea salt (such as Maldon)
Preparation
