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In the spring, after a winter of eating heavier and more acidifying foods, the body calls for a thorough internal cleanse. This alkalizing barley grass smoothie, with nectarine and tiger nut milk, is the one I've been preparing for years to kick off my spring detox. Smooth on the palate, ultra-green in the glass, it combines the concentrated chlorophyll of young barley shoots, the potassium of nectarine, and the creamy roundness of tiger nut. A rebalancing, sunny trio, perfect for restoring an alkaline environment.
Why this smoothie is alkalizing
Acid-base balance in two minutes
The body operates at a tightly regulated blood pH of around 7.40. To maintain this balance, it draws from its reserves of alkaline minerals (calcium, potassium, magnesium) whenever the diet provides an excess of acids: meat, aged cheeses, refined grains, fast sugars, coffee, alcohol. When this imbalance becomes chronic, it is referred to as an acidified environment. Fresh plant foods, rich in minerals and chlorophyll, act conversely as alkalizing buffers.
The key alkalizing ingredients of the recipe
- Barley grass: ultra-concentrated in alkaline minerals and chlorophyll.
- Nectarine: rich in potassium (≈ 200 mg / 100 g according to the Ciqual table of the ANSES) and mineralizing water.
- Ripe banana: provides potassium, magnesium, and a creamy texture that makes the smoothie indulgent without added sugar.
- Tiger nut milk: a traditional Iberian plant-based drink (horchata), mild and naturally low in acidity.
The central role of barley grass
Barley grass (Hordeum vulgare) is harvested about 10 days after germination, before the grain forms. At this stage, the young shoot concentrates chlorophyll, superoxide dismutase (SOD), GABA, flavonoids (saponarin, lutonarin), vitamins A, B1, B6, C, E, and about thirty minerals. It is one of the most densely alkalizing foods I know, and the active heart of this recipe. I detail its entire nutritional profile in the 10 benefits of barley grass juice.
The Recipe for Alkalizing Barley Grass Smoothie
Ingredients for 1 large glass (500 ml)
- 1 nectarine well-ripened (in summer) or 1 juicy Williams pear (off-season)
- 1 ripe banana (slightly speckled)
- 1 level teaspoon of barley grass powder (or 1/2 teaspoon of dehydrated barley grass juice, more concentrated)
- 150 ml of unsweetened tiger nut milk (or almond milk as an alternative)
- 100 ml of filtered spring water
- 1 teaspoon of chia seeds (optional, for creaminess and omega-3)
- Optional: a small handful of tender spinach leaves to enhance the green and fibers
Preparation in 3 minutes
- Wash the nectarine, pit it, and cut it into quarters. Peel the banana.
- Pour the tiger nut milk, water, and fruits into the blender jar.
- Add the barley grass powder last, then the chia seeds and optionally the spinach.
- Blend for 45 seconds at full power until you achieve a smooth and frothy texture.
- Serve immediately at room temperature to preserve the live enzymes.
Seasonal Variations
In the spring, I replace the nectarine with a well-ripened mango and add a slice of fresh ginger. In the summer, I keep the nectarine but replace the water with ice cubes for a granita version. In the autumn, a Williams pear + a Medjool date gives a more comforting version. In the winter, a pear + a pinch of Ceylon cinnamon replace the unavailable nectarine. For a more invigorating morning profile, try our lemon, ginger, and barley grass smoothie, or the citrus version with our barley, citrus, and coriander smoothie.
The Documented Benefits of Barley Grass
Chlorophyll, SOD, and Flavonoids
According to the review by Zeng et al. published in 2018 in Oxidative Medicine and Cellular Longevity, young barley shoots concentrate up to 440 units of superoxide dismutase (SOD) per gram, 528 mg of chlorophyll per 100 g, and about 0.53% flavonoids (saponarin and lutonarin). These documented compounds contribute to immune support, antioxidant action, and liver protection. For more information, see our guide 8 tips for taking care of your liver.
Effect on Acidic Terrain and Mineralization
Barley grass is one of the most concentrated plant sources of alkaline minerals. It provides potassium, calcium, and magnesium, the three pillars of acid-base regulation. Combined with sweet fruits, it helps balance the terrain without disrupting digestion. For a comprehensive effect, I also recommend reading our article strengthen your immune system naturally.
What Recent Research Says (2024)
A meta-analysis published in 2024 confirms the benefits of barley grass on several markers: blood sugar regulation, lipid profile balance, and support of the intestinal microbiota. These recent results complement the existing body of research and position young barley shoots as a superfood with high nutritional potential.
To discover Biovie's barley grass in detail, here is the video where I discuss with naturopath Rym Zoughlami:
"I have been ordering seawater and barley grass juice from Biovie for a few years. Everything has always gone very well. I have listened to Éric talk about his research several times before selling the products. I trust him."
— Christine Vaschetto, Trustpilot review (5 stars)
When and How to Do an Alkalizing Cure
The Best Time of Day
In the morning on an empty stomach or 20 to 30 minutes before breakfast is the optimal time: an empty stomach maximizes the absorption of chlorophyll, minerals, and enzymes. As a 4 PM snack, it is a great alternative to coffee or an industrial sugary snack. To learn all the ways to consume it, our article how to consume barley grass daily details powder, juice, and tablets.
Recommended Duration of the Cure
The classic spring or autumn cure lasts from 21 to 28 days, with one smoothie per day. For long-term daily use, 5 to 6 days a week is more than sufficient. Always start with half a teaspoon of barley grass for the first three days to test digestive tolerance before reaching the full dose (1 teaspoon).
Precautions and Contraindications
- Gluten: Green barley shoots harvested before heading do not contain gluten, which only forms in the mature grain. People with celiac disease can consume it if the raw material is certified free from cross-contamination.
- Anticoagulants: The vitamin K in barley grass can interact with anti-vitamin K treatments. Consult your doctor for advice.
- Diabetes Treatment: Barley grass can lower blood sugar levels; monitoring is recommended if you are on hypoglycemic treatment.
- Pregnancy and Breastfeeding: Medical advice is recommended for concentrated courses.
- Initial Detox Effect: Mild headaches, nausea, or more frequent bowel movements are possible in the first few days. Reduce the dose and hydrate more, then gradually increase.
FAQ: Your Questions About the Alkalizing Barley Grass Smoothie
What is an alkalizing smoothie and what is it for?
An alkalizing smoothie is a drink made from sweet fruits, green leafy vegetables, and chlorophyll-rich superfoods that provide the body with alkaline minerals (potassium, magnesium, calcium). It helps buffer the acidity generated by a diet rich in animal proteins, refined grains, and sugars, thus contributing to overall acid-base balance.
Why add barley grass to an alkalizing smoothie?
Barley grass is one of the most concentrated plants in chlorophyll and alkaline minerals. A teaspoon of powder provides superoxide dismutase (SOD), GABA, flavonoids, and numerous minerals documented by the study of Zeng et al. (2018). It transforms a simple fruit smoothie into a nutritionally dense and alkalizing drink.
Can you drink this smoothie every day?
Yes, provided you stick to a reasonable dose (maximum 1 teaspoon of barley grass powder per day). In the long term, it is advisable to alternate with other green superfoods (spirulina, chlorella, wheatgrass) to diversify intake and avoid habituation.
What is the best duration for a spring alkalizing course?
The classic course lasts 21 to 28 days, with one alkalizing smoothie per day, preferably in the morning on an empty stomach. It can be repeated in the fall. Between courses, a routine of 5 to 6 smoothies per week is sufficient to maintain balance.
Does barley grass contain gluten?
No. Green barley shoots are harvested before the grain forms, thus before gluten synthesis. It is suitable for intolerant individuals if the raw material is certified free from cross-contamination during processing.
What can replace nectarines out of season?
A juicy Williams pear, an organic frozen peach, or in winter, a sweet Gala apple paired with a Medjool date to maintain the sweet roundness. The recipe remains alkalizing as long as you keep the barley grass, ripe banana, and tiger nut milk.
About the Author
"When I started making this smoothie, I simply called it 'my green.' It became my spring ritual. In a glass, it contains just about everything I consider essential to restart after winter: chlorophyll, alkaline minerals, a bit of sweetness, with no compromise on the quality of the ingredients."
Eric Viard is an agronomist engineer with a tropical background, co-founder of Biovie.fr, and has been practicing veganism for 33 years. He is the co-author with Aurélie Viard of the book Algae in Everyday Life, double winner of the Gourmand World Cookbook Award and the National Culinary Academy Award.
Updated: April 2026
This article is intended for informational purposes and is not a substitute for medical advice. In case of doubt or ongoing treatment, consult a healthcare professional.
