If the stick is unsalted, add one teaspoon of salt. Now, fill each section of your ice cube tray with the blend and freeze until solid before transferring it to a freezer-safe bag.

If the ice cube tray still has a lingering odor of stale food, try putting it in the oven at a low temperature (around 250 degrees Fahrenheit) and letting it warm up for the smelly odor molecules ...