Nutrition per serving may change if servings are adjusted.
1 14-ounce can nonfat sweetened condensed milk
2 cups low-fat milk
1 tablespoon freshly grated lemon zest
⅔ cup lemon juice
⅛ teaspoon salt
Whisk together sweetened condensed milk, milk, lemon juice, lemon zest and salt in a mixing bowl. Freeze in an ice cream maker according to the manufacturer's directions. (Alternatively, freeze the mixture in a shallow pan until solid, about 6 hours. Break into chunks and process in a food processor until smooth.)