Aquafaba, the liquid from cooked or canned chickpeas, is considered low FODMAP in small servings according to current dietary research. However, its tolerance depends strongly on portion size and individual sensitivity. While it contains trace carbohydrates from chickpeas, studies suggest that moderate amounts (typically a few tablespoons) are unlikely to trigger symptoms in most people following a low FODMAP diet.
What Is Aquafaba?
Aquafaba is the viscous liquid left after cooking chickpeas or draining canned chickpeas. It gained popularity as a plant-based substitute for egg whites due to its ability to foam and emulsify.
Composition-wise, aquafaba contains:
- Small amounts of soluble carbohydrates
- Trace proteins and saponins
- Water-soluble compounds from chickpeas
Despite originating from a high-FODMAP legume (chickpeas), not all FODMAPs fully transfer into the cooking liquid.
Is Aquafaba Low FODMAP?
✔ Yes, in controlled portions
According to low FODMAP testing principles used in clinical dietetics (such as those developed by Monash University), aquafaba is generally classified as low FODMAP when consumed in small amounts.
This is because:
- Most fermentable oligosaccharides (GOS) remain in the chickpea solids rather than the liquid
- The liquid contains only trace amounts of FODMAP carbohydrates
- Small serving sizes do not exceed FODMAP threshold levels for most individuals with IBS
⚠️ But portion size matters
Even low FODMAP foods can become problematic if eaten in large quantities. Aquafaba is no exception.
- Small amount (1–2 tablespoons): typically well tolerated
- Larger amounts (½ cup or more): may increase risk of symptoms in sensitive individuals
Why Aquafaba Is Considered Low FODMAP (Scientifically)
FODMAPs are water-soluble short-chain carbohydrates, but their distribution is not uniform.
During chickpea cooking:
- Some FODMAPs remain trapped in the seed structure
- A fraction diffuses into the surrounding liquid
- The resulting aquafaba is diluted and lower in fermentable load
This dilution effect explains why aquafaba can be tolerated even though chickpeas themselves are high FODMAP in large servings.
Aquafaba and IBS: Is It Safe?
For most people with IBS:
- ✔ Small amounts are generally safe
- ✔ Can be used as an egg substitute in baking and cooking
- ⚠ Individual tolerance varies significantly
If you are in the elimination phase of a low FODMAP diet, it is usually recommended to:
- Start with very small amounts
- Test tolerance during reintroduction phases
How to Use Aquafaba on a Low FODMAP Diet
Aquafaba can replace eggs in many recipes:
- Whipped “egg whites” for desserts
- Vegan mayonnaise
- Muffins and cakes
- Pancakes and waffles
💡 Tip: Start with 1 tablespoon per recipe if you are unsure of tolerance.
Frequently Asked Questions (FAQ)
Is aquafaba safe for IBS?
Yes, in small amounts aquafaba is generally considered safe for most people with IBS. However, tolerance varies individually.
Why is aquafaba low FODMAP if chickpeas are not?
Most FODMAPs remain in the solid chickpeas, while the liquid contains only small, diluted amounts.
Can I use aquafaba during the elimination phase?
Yes, but only in small, controlled portions. It is best to test it cautiously or wait until the reintroduction phase if you are highly sensitive.
How much aquafaba is low FODMAP?
Typically 1–2 tablespoons is considered a safe low FODMAP serving for most individuals.
Does canned chickpea liquid have fewer FODMAPs than homemade?
Often yes. Canned chickpea liquid is usually more diluted and has been processed, which can reduce FODMAP concentration slightly.
Final Thoughts
Aquafaba is a useful plant-based ingredient that is generally low FODMAP in small servings, making it suitable for many people with IBS. However, like many foods in the low FODMAP framework, dose is critical, and personal tolerance should always guide long-term use.