Banoffee Ice Cream

Heavily adapted from around the internets

4 very ripe bananas
1 can sweetened condensed milk
2 c. heavy cream
1/2 tsp. salt
1 tsp. vanilla

Place unopened can of sweetened condensed milk in sauce pan. Cover with water; bring to a boil and then simmer gently for 2 hours to make dulce de leche. Place all ingredients in blender (may require two batches). Blend thoroughly. Freeze, stirring every 30 minutes for the first 3 hours.