Combine the dry ingredients in the mixing bowl. Add the boiling liquid very slowly, working the meal well with the back of a wooden spoon. Work in the bacon fat if desired. The dough must be very thick, but wet enough to hold together without cracking. Divide into 16 portions and shape into balls. Flatten into circles approximately 1 inch (2½ cm) across, and ⅜ inch (1 cm) thick. Edges should be smooth, appearing as miniature biscuits. Place on top of the bubbling broth. Cover and cook for about 10 minutes. Serve with greens or along with the soup or stew.