Feta

Low FODMAP

Serving sizes

Feta 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 Low
Large serving Moderate

Feta is Low FODMAP, a brined cheese where most of the milk sugar has been left behind in the aging process.

The brining and aging leave feta with very little residual lactose, so a small serving sits comfortably low, while a large serving climbs to moderate as that milk sugar starts to add up.
Feta shows up crumbled over salads, baked into dishes, or marinated in oil, and any added ingredients can shift the picture, so it is worth a glance at what it is packed with.

Enjoy feta scattered over a salad or roasted vegetables, keeping to a modest amount to stay in the comfortable range.

Why feta is rated low

Feta comes in low, with the size of the helping doing the real work. The rating is estimated from what feta is made of, a cheese matured and held in brine, rather than from a measured serving of it, and no FODMAP subgroup is recorded for it. The ladder has two rungs and the climb between them is the point: a Small serving reads LOW, and a Large serving reads MODERATE. So scattering feta over a salad or a tray of roasted vegetables is the comfortable version of eating it, while making it the main event of the plate moves things up. Low here means low at a Small serving, not unlimited.

What changes your risk

Serving size, which is the whole question A Small serving is LOW and a Large serving is MODERATE. Feta is salty and assertive, so a Small serving usually flavours a whole dish anyway, which makes this the easiest lever to pull.
Stacking across the meal A low rating counts per serving, not per plate. A Small serving of feta in a meal that is already carrying other servings adds to the total load of that meal, so it is worth looking at the plate as a whole rather than one ingredient at a time.
Marinated feta and the oil it sits in Tubs of feta marinated with garlic cloves, onion or herb mixes are a different proposition from plain brined feta. Garlic infused oil with no solid pieces left in it carries the flavour without the fructans, but loose garlic sitting in the jar does not.
What gets baked with it Baked feta dishes are usually built on onion, garlic or a stock base, and that is where the FODMAP load lands. Heat does not break FODMAPs down, so baking the block changes nothing about the cheese itself.
Flavoured and crumbled packs Pre-crumbled tubs and flavoured versions can carry added ingredients beyond milk, salt and culture. Plain feta in brine is the form this rating describes.

What else works

Feta is fine at a Small serving, so the swap question is usually about wanting more of that salty, crumbly hit than a Small serving allows. Hard, aged cheeses such as cheddar, parmesan and swiss give the same savoury lift and are dependable choices, and parmesan in particular goes a long way over roasted vegetables or a salad. Firm tofu, cubed and seasoned well, fills the white crumbly role in a grain bowl without bringing dairy into it at all. If it is creaminess you are after, lactose-free yoghurt whisked with lemon and chives is an honest stand in, and it is ordinary dairy with the lactase enzyme added rather than a dairy-free product. What does not work as a substitute is trading feta for another fresh soft cheese: ricotta, cottage cheese and cream cheese are not low at ordinary servings, and neither is ordinary yoghurt.

How to keep it low

Buy feta packed in brine rather than pre-crumbled, since the brine keeps it firm and the block gives you control over how much goes on. Crumble a Small serving over the dish at the table rather than mixing it through the whole bowl, which spreads the flavour and keeps the amount visible. Store the block in its brine and top it up with lightly salted water if the level drops, and it will keep far better than a dry chunk in a bag. For marinated feta, make your own with olive oil, garlic infused oil, lemon zest, oregano and peppercorns rather than buying a jar with garlic cloves floating in it. Ordering out, salads often arrive under a heavy scattering, so asking for feta on the side keeps the serving where you want it.

Common questions

how much feta is low fodmap

A Small serving of feta is LOW in the published serving data. A Large serving reads MODERATE, so the comfortable amount is a scattering rather than a generous heap.

is feta ok on the elimination phase

A Small serving fits, since that is where the data puts it at LOW. The rating is estimated from what feta is made of rather than a measured serving, and tolerance still varies between people.

is baked feta low fodmap

Baking does not change the FODMAP content of the cheese, so a Small serving is still LOW and a Large serving still reads MODERATE. The bigger issue with baked feta dishes is the onion, garlic or stock they are usually built on.

what can i use instead of feta

Parmesan, cheddar or swiss give the same salty, savoury lift, and firm tofu covers the crumbly white texture in a grain bowl. Marinated feta jars with garlic cloves in them are the version to leave on the shelf.

Learn more

Informational only, not medical advice. Individual tolerance varies. Talk to a healthcare professional or a dietitian for personal guidance.

Feta 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.