Gravy
Serving sizes
Gravy changes rating with portion size. Its rating is estimated from what it is made of, so the servings are described rather than weighed.
- Small serving
- Large serving
Gravy is High FODMAP, since most versions are built on savory aromatics and a wheat-flour thickening that pack in fermentable carbs.
- The Fructans come from the onion and garlic gravy is usually made with, plus the wheat flour used to thicken it, so it sits at moderate even at a small serving and climbs to high with a large one.
- Most homestyle and packaged gravies share these same building blocks, though the exact recipe and any added ingredients shift the picture.
For a comfortable version, thicken with cornstarch and build flavor with garlic-infused oil and the green tops of spring onions instead of the bulb.
Why gravy is rated high
Gravy is high FODMAP, and the reason is what goes into the pan before the liquid does. It is usually built on onion and garlic, and thickened with wheat flour, and all three bring fructans. The rating is estimated from that composition rather than from a weighed and measured serving, and it lands high overall. The ladder does carry a lower rung, and it is the most useful thing on this page: a Small serving reads moderate, and a Large serving is high. There is no low rung here, so a small amount is not a way of making gravy fit. Stock cubes, powders and packet gravies tend to be built the same way, with onion and garlic in the seasoning even when they are not obvious on the front of the box.
What changes your risk
- Serving size A Small serving is moderate and a Large serving is high. Pouring less lowers the load, but there is no rung here that comes in low, so portioning alone does not make gravy a low FODMAP food.
- Onion and garlic in the base These are the main source of the fructans. A gravy started with garlic infused oil and the green tops of spring onions instead of the bulb is a genuinely different food from one started with chopped onion.
- Wheat flour as the thickener The flour whisked into the fat carries fructans of its own. Cornflour, rice flour or a gluten free flour blend thickens just as well without them.
- Packet mixes, cubes and jars Read the ingredient list rather than the name. Onion powder, garlic powder, onion extract and wheat are standard in commercial gravy granules and stock cubes, and inulin or chicory root fibre sometimes appears too.
- Stacking across the plate Fructans add up across a meal. A roast dinner often pairs gravy with wheat stuffing, bread sauce, a bread roll and onion in the vegetables, and each of those is pulling on the same subgroup.
Swaps
The role gravy plays is savoury, glossy and pourable, and that can be rebuilt without the aromatics. Start with the pan juices from roast meat or poultry, skim some of the fat, and thicken with cornflour slaked in cold water rather than with a wheat flour roux. Build the flavour back with garlic infused oil, the green tops of spring onions, leek leaves, chives, a pinch of asafoetida, fresh thyme or rosemary, black pepper and a splash of red wine. Homemade stock from bones with carrot, the green parts of spring onion and herbs gives the depth a shop bought cube is supposed to provide. For an onion like sweetness, well browned carrot in the pan works. What does not solve this is swapping to another onion: shallots, leek bulbs and the white part of spring onion all carry the same fructans, and so does thickening with ordinary wheat flour.
How to lower the load
Make gravy from scratch on days it matters, since that is the only way to control the two ingredients that drive the rating. Keep cornflour and garlic infused oil in the cupboard and a bag of frozen homemade stock in the freezer, so a roast does not end with reaching for a packet. If someone else is cooking, ask whether the gravy started with onion, or whether it came from granules, and expect the answer to be yes to one of them. Restaurant gravy, roast dinner gravy and pub gravy are almost always onion based, so ordering the meat and vegetables without it is more reliable than asking for less. When you do serve your own, keep it in a jug rather than poured over the whole plate, so the amount stays nearer a Small serving than a Large serving.
Common questions
is gravy high fodmap
Yes. Gravy is high FODMAP overall because it is usually built on onion and garlic and thickened with wheat flour, all of which carry fructans. A Small serving reads moderate and a Large serving is high.
is gravy high in fructans
Fructans are the subgroup that drives the rating. They come from the onion and garlic in the base and from the wheat flour used to thicken it.
how do you make low fodmap gravy
Start with the roast pan juices, thicken with cornflour instead of wheat flour, and build the savoury flavour with garlic infused oil, leek leaves, the green tops of spring onions, herbs and black pepper rather than onion or garlic.
can i have gravy on the elimination phase
Not the standard kind. There is no low rung here: a Small serving is already moderate and a Large serving is high, so a homemade version built without onion, garlic and wheat flour is the way to keep gravy on the plate.
Try FODMAP Foods
Scan any food with your camera, search every rating in this list, and see your safe portion before you eat.
Learn more
Informational only, not medical advice. Individual tolerance varies. Talk to a healthcare professional or a dietitian for personal guidance.
Gravy is an estimated rating: it is inferred from the food's ingredients and composition and cross-checked, not measured directly in the papers below. The low, moderate and high cutoffs are still those of Varney et al. (2017).
References
- Fructan and free fructose content of common Australian vegetables and fruit. Muir et al. (2007), J. Agricultural and Food Chemistry 55(16):6619-6627.
- Measurement of short-chain carbohydrates in common Australian vegetables and fruits by HPLC. Muir et al. (2009), J. Agricultural and Food Chemistry 57(2):554-565.
- Quantification of fructans, galacto-oligosaccharides and other short-chain carbohydrates in processed grains and cereals. Biesiekierski et al. (2011), J. Human Nutrition and Dietetics 24(2):154-176.
- Dietary sorbitol and mannitol: food content and distinct absorption patterns. Yao et al. (2014), J. Human Nutrition and Dietetics 27(Suppl 2):263-275.
- FODMAPs: food composition, defining cutoff values and international application. Varney et al. (2017), J. Gastroenterology and Hepatology 32(Suppl 1):53-61. Supplies the low, moderate and high cutoffs used on this page.
Last reviewed September 22, 2026.