Homemade Soda Crackers

4 cups flour
1/2 teaspoon baking soda
1 teaspoon salt
3/4 cup buttermilk
1 cup butter

Sift dry ingredients together. Cut in milk and butter (I used my food processor), mixing well into a stiff dough. Dough will be stiff. Roll very thin on lightly floured counter/board, cut into squares (I used my pizza cutter). Place onto cookie sheet then prick with fork, sprinkle with coarse sea salt and bake at 400 for about 6 minutes or until edges start to brown.