Leafy greens, like kale, have chlorophyll that can make a smoothie last longer. [2] X Research source Lemons or fresh lemon juice can also keep smoothies fresh for up to 2 days. [3] X Research source If you notice separation in your smoothie after 1-2 days, like a layer of water on top and a layer of greens on the bottom, it hasn’t gone bad—just throw it in the blender and mix it into a creamy consistency again.

Ingredients like reconstituted juice, fruit paste, or purée in store-bought smoothies may also last longer in the fridge than the fresh produce used in homemade smoothies.

Leave 2-3 inches at the top of jars to prevent the liquid from expanding and breaking the glass in the process.

If you don’t leave any space in the container, you’ll keep air out and avoid oxidation, which makes fruits and veggies go bad. [8] X Research source Before you seal up the smoothie, squeeze in some lemon juice. The vitamin C also prevents oxidation. [9] X Trustworthy Source PubMed Central Journal archive from the U. S. National Institutes of Health Go to source

The vitamin C in citrus juices, like orange or lemon juice, can prevent quick oxidization. When you add vitamin C, you also improve the quality and freshness of your smoothie. [12] X Trustworthy Source PubMed Central Journal archive from the U. S. National Institutes of Health Go to source

Dairy that’s gone bad has a lot of unsafe bacteria, while rotten fruits and veggies carry germs. [14] X Trustworthy Source Centers for Disease Control and Prevention Main public health institute for the US, run by the Dept. of Health and Human Services Go to source

To prepare a smoothie with smoothie concentrates: Add 2 cubes to a shaker cup or blender. Pour in a milk of your choice. Wait 10 minutes for the cubes to thaw, then pulverize your ingredients.

When you’re ready to drink one, take out a “make ahead” smoothie from the freezer and let it thaw to room temp.

Scribble down other details, like the amount of milk or water each smoothie needs.

A Vitamix is a high-powered blender that makes ultra-creamy smoothies. A Ninja blender is great for making single servings of smoothies. A Nutribullet is a budget-friendly blender for single-serve smoothies.

Strawberry Banana Smoothie Grapefruit Smoothie Blueberry Smoothie Peach Smoothie Avocado Smoothie Green Smoothie