Beat 9 ounces lard in a large bowl with an electric mixer until creamy. Add salt and continue beating for a few minutes. Add masa harina and beat well until combined. Add chicken broth, 1/4 cup at a time, beating until masa has a smooth and workable consistency similar to cookie dough, about 3/4 cup total. Test if the masa is ready by dropping a small ball of masa into a glass of cold water; if it floats, it's ready, if not, beat the dough a little longer.