- 1 (14 ounce) can sweetened condensed milk, label removed
- Place can of sweetened condensed milk in a saucepan. Pour in enough water to come halfway up the sides of the can; bring to a boil. Reduce heat to medium; cover and cook, adding more water as needed, about 3 hours.
- Transfer can to a bowl of ice water using tongs. Let cool completely before opening, at least 30 minutes.