Key Lime Frozen Yogurt

1 cup plain low-fat yogurt — stirred
(1) 14 ounce can sweetened condensed milk
1 six ounce can frozen limeade concentrate, undiluted and partially thawed

In medium bowl, combine yogurt and condensed milk. Stir in undiluted and partially thawed limeade concentrate. Freeze in ice-cream maker according to manufacturer’s directions; or follow refrigerator-freezer instructions.
Makes about 1 quart.