Preheat the oven to 400 degrees.
Put 2 cups of the flour into a large mixing bowl. Add 4 of the eggs, one at a time, beating thoroughly into the flour using a wooden spoon with each addition. The dough will be sticky, thick, and spongy. Add the water, sugar, and salt and mix well, beating vigorously. Add 3 sticks of the butter and work it into the dough with your hands until it is well blended. Add the remaining 2 eggs and mix well into the dough. Add the remaining 2 cups of flour and blend into the dough, breaking up any lumps with your fingers. Add the yeast mixture. Using your hands, k
To make loaves, lightly butter two 9- by 5- by 3-inch loaf-pans with the remaining 2 tablespoons butter. To make rolls, butter 12 standard-size muffin cups. With your fingers, lightly punch down the dough. Divide the dough into 2 equal portions and place in the pans. For rolls, divide the dough into 12 equal portions and place in the muffin cups. Brush the tops with egg yolk. Cover and let rise in a warm, draft-free place until it doubles in size, about 1 hour.
This recipe yields 2 loaves or 12 muffins.