Blini (Russian Pancakes)

Ingredients (10)

• + 4 ¼ cups milk add to pantry
• ✓ 5 eggs
• + ⅓ teaspoon salt add to pantry
• + 2 tablespoons white sugar add to pantry
• + ½ teaspoon baking soda add to pantry
• + ⅛ teaspoon citric acid powder add to pantry
• + 4 cups all-purpose flour add to pantry
• ✓ 3 tablespoons vegetable oil
• + 1 cup boiling water add to pantry
• ✓ ⅔ cup butter, divided