Milk is of a thinner consistency than yogurt. Milk can replace yogurt 1:1, but do not add all at once. Start by mixing ¾ of the milk with the eggs, and stir the wet mixture into the dry mixture. If the dough looks too dry, add more milk (2 - 3 teaspoons at a time) until just enough to moisten the dough. When replacing yogurt with milk, omit the baking soda and double the amount of baking powder.