2 envelopes Knox gelatin
1/2 cup cold water
4 cups whole milk
2 cups granulated sugar
2 teaspoons vanilla extract
1/2 teaspoon salt
3 cups cream
Soak Knox gelatin in cold water. Heat milk, but do not boil. Remove from heat, and add gelatin, sugar, vanilla extract and salt. Cool and add ice cream. Chill 5 to 6 hours.
Pour into a 4 to 6-quart ice cream freezer can. Process as per manufacturer's instructions.