Cheese Vareniki (Dumplings) — Jewish Food Society

Ingredients

• 1 pound farmer cheese
• 1 large egg
• ½ cup kefir
• ¾ cup grated parmesan cheese
• Scant ½ cup all-purpose flour
• 1 ½ teaspoons kosher salt, plus more to taste
• ¼ cup minced chives
• 3½ cups (450 grams) all-purpose flour
• 1 tablespoon kosher salt
• ¾ cup plus 2 tablespoons cold water
• 5 tablespoons unsalted butter, at room temperature, divided
• 5 teaspoons white wine vinegar, divided
• Salt
• Sour cream or crème fraîche
• Fresh dill or scallions