French Toast
Serving sizes
French Toast 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
- Moderate serving
- Large serving
French Toast is High FODMAP, a comforting brunch classic built on wheat bread soaked in a milky, eggy custard.
- The wheat bread brings Fructans and the milk soak adds Lactose, a double load that sits at moderate even in a small serving and climbs to high once you reach a moderate or large portion.
- Egg is a friendly base here, so the real drivers are the bread and the milk it soaks up, and any syrupy or fruity toppings can add to the picture.
For a lighter plate, make it with certified gluten-free bread and lactose-free milk so you can enjoy the same custardy comfort.
Why french toast is rated high
French toast is high FODMAP because it doubles up on two subgroups: fructans from the wheat bread and lactose from the milk it is soaked in. The rating is estimated from what French toast is made of rather than a measured serving. A Small serving sits at moderate, a Moderate serving reaches high, and a Large serving stays high, so there is no low step on the ladder. The egg itself is not the problem. The bread and the milk soaking into it are, and toppings can pile on more.
What changes your risk
- The bread Ordinary wheat bread, brioche and challah all bring fructans. Gluten free bread removes that source, and traditional sourdough with a long fermentation has much of its fructan broken down.
- The milk in the custard Ordinary milk or cream brings lactose. Swapping to lactose-free milk takes that source out without changing how the custard behaves.
- Toppings Honey and fruit like apple, pear or mango add more FODMAPs, and ordinary cream or ice cream on top adds more lactose. Maple syrup, strawberries, blueberries and raspberries keep it lighter.
- Serving size The ladder climbs from moderate at a Small serving to high at a Moderate serving, and stays high at a Large serving.
- Cooking Frying in a pan does not destroy fructans or lactose. The soak and the bread you start with decide the load.
Swaps
The cleanest fix covers both subgroups at once: make it with gluten free bread or traditional sourdough spelt bread and soak it in eggs whisked with lactose-free milk. Lactose-free milk is ordinary dairy with the lactase enzyme added to split the lactose, so it is not dairy-free and is not suitable for a milk allergy. Top it with maple syrup or rice malt syrup instead of honey, and with strawberries, blueberries, raspberries or firm just-yellow banana instead of apple or stone fruit. If you want something creamy on top, lactose-free yoghurt fills that role.
How to lower the load
Slightly stale gluten free bread soaks up custard better and holds together in the pan, so leave it out uncovered for a few hours or toast it lightly first. Keep the soak brief, since gluten free bread can go soggy fast. Season the custard with cinnamon, vanilla and a pinch of salt rather than flavoured creamers, which often carry ordinary milk. When ordering French toast out, the bread is almost always wheat brioche and the batter ordinary milk, so it is hard to bring down to a low option away from home. Batches freeze well: cook, cool, freeze flat and reheat in a toaster.
Common questions
is french toast low fodmap
No. Classic French toast is rated high FODMAP overall, an estimate based on the fructans in the wheat bread and the lactose in the milk soak.
how much french toast can i eat on low fodmap
None of the steps on its ladder is low. A Small serving is moderate, while a Moderate serving and a Large serving are both high.
is french toast high in lactose
The milk or cream in the custard brings lactose, alongside fructans from the bread. Using lactose-free milk removes the lactose, though it is still dairy and not suitable for a milk allergy.
how do you make low fodmap french toast
Use gluten free bread or traditional sourdough spelt bread, soak it in eggs with lactose-free milk, and top with maple syrup and berries instead of honey or apple.
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.
French Toast 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 October 17, 2026.