This post may contain affiliate links, meaning I can earn a small commission from items you purchase (at no cost to you).
Alkaline smoothie cubes are one of those small habits that quietly make healthy living easier. You spend a few minutes blending and freezing, then your future self gets fast, nourishing smoothies all week long. This recipe is simple, flexible, and built for real life, not perfection.
Table of Contents
What Is Alkaline?
When people talk about “alkaline” foods, they’re usually referring to whole, plant-based ingredients that are considered alkaline-forming after digestion. Think leafy greens, fresh fruits, herbs, and hydrating veggies. Your body does an amazing job regulating its own pH, so this isn’t about changing your chemistry. It’s about choosing foods that support overall wellness by adding more plants, fiber, and antioxidants to your day.
Why You’ll Love These Cubes
- These cubes save time in a big way. You blend everything once, pour it into a tray, and freeze. On busy mornings, you just pop a few cubes into the blender, add fruit or liquid, and hit start. No chopping. No guessing. No cleanup marathon.
- They also don’t require fancy equipment. A blender for smoothies and a ice cube tray are all you need. If you’ve got those, you’re in business. The flavor is fresh and clean, with bright citrus, mild greens, and a hint of zing from ginger. Nothing overpowering. Nothing grassy.
- Most of all, these cubes support consistency. When healthy choices are already prepped, they’re easier to keep. This is progress over perfection in frozen form.
Save this Recipe for Later!
Enter your info below and I’ll send it straight to your inbox to save for later.
Ingredients You’ll Need
- Leafy greens like spinach, romaine, or kale form the base of these cubes. I recommend buying organic when you can since greens tend to be heavily sprayed. Look for vibrant color and crisp leaves.
- Cucumber adds hydration and keeps the flavor light. Choose firm cucumbers with smooth, dark green skin.
- Celery brings a subtle savory note and extra crunch. Crisp stalks are best, and don’t toss the leaves. They blend beautifully.
- Fresh lemon or lime brightens everything up. Pick fruit that feels heavy for its size, which usually means more juice. Ginger adds warmth and a little kick. Go for firm, smooth roots without wrinkles.
- For liquid, use alkaline water or unsweetened coconut water. Coconut water adds mild sweetness and natural electrolytes, while alkaline water keeps things neutral and versatile. You can use leftover water in my Hydrating Alkaline Smoothie recipe.
Alkaline Smoothie Cubes
Ingredients
- ¾ cup lime juice
- 1 cucumber peeled if desired, cut into chunks
- 3 cup kale tough stems removed, chopped
- 3 cup collard greens tough stems removed, chopped
- ½ cup fresh parsley leaves and tender stems
- alkaline water⠀ for blending
Instructions
- Add ingredients to the jar of a blender in the order listed, except for alkaline water. Pulse a few times, then turn onto high and blend until smooth. If needed, add a little of the alkaline water for easier blending.
- Scrape down sides of blender and look to see how much liquid there is. Add enough alkaline water to fill to the 4 cup (32-ounce) line. Blend again.
- Fill two standard 16-well ice cube trays with the pureed greens. Tap the trays gently on the counter to remove any air bubble and place in freezer. Freeze for several hours, preferably overnight, until solid. Pop out of ice cube trays and store in a freezer-safe, airtight container.
- When ready to use, add 4 cubes to your favorite smoothie to replace of in addition to the leafy greens. Four cubes is roughly equal to 3/4 cup packed fresh greens.
Helpful Tools
Notes
- Lemon juice can be substituted for the lime juice, as can raw apple cider vinegar.
- Use any leafy green to substitute the ones listed above, keeping in mind that cruciferous vegetables have more of the detoxifying and alkaline properties. Bok choy, Brussels sprouts, broccoli or cauliflower, cabbage, and other cruciferous veggies are great substitutes.
- For those worried about consuming raw leafy greens, the greens can be lightly steamed or blanched before blending, and will lose a bit of volume. Add more water or increase the amount of greens to equal the 4 cups of liquid.
- Cucumber can be substituted with celery, broccoli, cabbage, lettuce, radish, bell pepper, or another alkaline vegetable or fruit.
Nutrition
Did you make this recipe?
Leave a review for a chance to win signed copies of my cookbooks!Common Questions
Add 2–4 alkaline smoothie cubes to your blender with liquid and fruit. Blend until smooth.
Alkaline smoothie cubes keep well for up to 3 months when stored airtight in the freezer.
Alkaline smoothie cubes are intended to boost your smoothie base. Please still add fruit, protein, or healthy fats to make it more balanced and filling.
Yes. Alkaline smoothie cubes are flexible. Swap greens, add herbs, or adjust citrus to taste.
If you want some great information on cancer as a metabolic disease, I suggest reading: Cancer as a metabolic disease by Dr. Thomas Seyfried, or the book by Dr. Paul Marik Cancer Care. Dr. Seyfried has YouTube videos as well. Nutrition plays a HUGE part in treating and controlling your cancer. Thank you for your smoothie recipes!
Thank you for sharing Regan. I’ll check it out!
I have a Kangen Water machine, which makes alkaline water. Easier, but way more expensive. There’s a You Tube video out there that says drinking that water will prolong a pet’s life. My cocker spaniel is 15 1/2 years old and while she’s blind and deaf, she’s still going strong- totally healthy, except for that. We both drink it, but she gets it exclusively. I drink it if I’m getting a drink from the kitchen (which is where most of my water comes from), but I’m not so hung up on it that I’ll go to the kitchen, just when I’m brushing my teeth!
Love that you’ve incorporated alkaline water this way and even for your sweet puppy! What a good pet mama you are!
I love the idea of adding these as the ‘green part’ of a smoothie and getting more than just one green!
It’s a total power rawkstar move Olivia!
It is a popular argument against this diet that alkaline foods do not affect blood pH. This is true, the body will do whatever is needed to keep the blood pH in the 7.2-7.4 range, including starving the rest of the body of calcium, potassium and magnesium. The goal of the diet is to effect the intra-cellular pH. Changes in intracellular pH can potentially affect virtually all cellular processes, including metabolism, membrane potential, cell growth, movement of substances across the surface membrane, state of polymerization of the cytoskeleton and ability to contract in muscle cells. Cancer occurs when the metabolism of a cell shifts from aerobic glycolysis to anaerobic glycolysis – a shift far more likely to occur in cells stressed by low pH environments which stress the oxygen available to a cell for glycolysis. This gets further exacerbated as the shift from aerobic to non-aerobic glycolysis changes the output of the cycle from 36 ATP to 2 ATP + Lactic acid, leading to acidosis. All of this information is readily available via PubMed to anyone willing to look.
Yes the body will do as you say! However; what condition is “that” body in??? Extremely unhealthy ppl or deficient people or blood diseased ppl?? Whole other conversation. N I hate to say it but that’s a lot of ppl.
Absolute heaven better than any shop prepared drink..
.so so easy
Just try it and see for yourself
So glad you loved them as much as we do, John!
This is so cool! Can’t wait to make a batch.
Can’t wait to try these!
I love having these smoothie cubes on hand for an easy alkaline boost!
Alkalizing the body is so important— thank you for sharing these with us!
After learning the health benefits of alkaline foods, this is my go-to boost when blending!
These are so interesting! I noticed some people from the Smoothie Challenge FB group saying they use these in a pinch when they don’t have leafy greens. Just froze some, can’t wait to try them!
Yes, these are such a convenient way to keep that green in your smoothie when you’re out of fresh leaves of your fave green stuff. Let us know what you think after you give these cubes a blend!
Do you think that these cubes can be thawed into regular water instead of blended into a smoothie once made? Thanks!
Do you mean thawed into water to drink? I think you could probably do that if you’re looking to make a green juice.
I thought your smoothie we’re already super green— but this takes it to a whole new level! I just made a batch of these to have on hand in my freezer if I’m ever out of fresh spinach. What are you guys gonna think up next?!
I love these and they’re so clutch to keep in the freezer for those days!
what do you do if you are vitamin K sensitive due to heart medication???
You will definitely want to speak with your doctor or healthcare provider regarding a diet/medication conflict.
Wow!! This is so cool!! Always heard of alkaline water and its benefits, but would much rather be adding plants + veggies!
I have to agree 🙂