The Best Tool for larger cubes: Muffin Tins
Before making your next pitcher drink, reach for a muffin tin (or two). Muffin tins are the ideal size to make large, long-lasting ice cubes to keep a pitcher of drinks cool.
Fill the muffin cups with plain water or make the ice more fun by adding sliced lemon or small pieces of fruit. Then, to release the cubes, just run the bottom of the muffin tin under hot water for about 30 seconds.
These large cubes will last longer in your pitcher and will keep the beverage colder. So enjoy the heat but remember to drink plenty of fluids.