23 Genius Ways To Use An Ice Cube Tray

21 Freeze greens to add to smoothies.
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Using raw greens in a smoothie is nice, but can take some extra work (and make for some weird fibrous mouthfuls) in the morning. Try cooking your greens first, puree in your food processor or blender, and freeze in ice cube trays. When you’re ready to make your smoothies, just pop in a couple green ice cubes.