Citrus Sherbet
["3 citrus fruits (2 lemons and 1 lime or 1 lemon, 1 lime and 1 orange) rind (zest) and juice", "1 1/3 c. sugar", "1 qt. skim milk"]
["Grate rind and squeeze juice.", "Mix sugar into it and then add skim milk.", "Freeze in a 9 x 13-inch pan until crystallized (2 to 3 hours).", "Mix with a beater.", "Put in Tupperware bowl for 2 to 3 hours.", "Serve.", "(If you use more than one lime, be sure to add more sugar.)"]
["lemons", "sugar", "milk"]