Lard

Why lard is rated low

Lard is pork fat that has been rendered down, and its rating here is estimated from what the food is made of rather than from a measured serving in a lab. Rendering leaves behind fat and little else, so there is no fermentable carbohydrate for gut bacteria to work on, and no FODMAP subgroup is recorded against it. The ladder records one rung, "Any typical portion": LOW, so the amount you would cook with sits low. That verdict covers the fat itself and nothing else in the pan. Lard is a cooking medium, so the FODMAP load of a lard-fried meal comes from whatever is cooking in it and from the stock, rub or gravy that goes alongside.

What changes your risk

• What you cook in it The ladder covers plain rendered lard. Frying potatoes in it keeps the plate low, while frying onion in it does not, because the onion pieces themselves end up on the plate and they carry their own fructans. The fat is not the problem and it does not take the fructans on, so the fix is to leave the solid onion out rather than to change the fat.
• Flavoured and seasoned fats Drippings saved from a roast that started with onion and garlic, or a tub sold as seasoned lard, are no longer plain lard. Read the label for onion powder, garlic powder and stock solids, since those are what carry the load.
• Frying is not a way to lower FODMAPs Heat does not break FODMAPs down, and nothing leaves food that is fried, roasted or baked. Only boiling in plenty of water and pouring the water away removes some of the water-soluble ones, and frying in lard does the opposite of that.
• Stacking across the meal Low here is per food, not per plate. Lard adds nothing, but the pastry, the bread on the side and the sauce all count toward one meal's total, and several low servings eaten together can still add up to a load that feels high.
• Garlic flavour without the fructans Fructans are water-soluble and do not dissolve into fat, so garlic-infused oil gives the savoury depth with no fructans coming through, provided no solid pieces of garlic are left sitting in it.

What else works

Lard is not a food that needs replacing, so the useful list is the one next to it. Plain rendered fats and plain cooking oils behave the same way, tallow among them, and garlic-infused oil is the one to reach for when a dish wants that roasted-allium note. The lookalikes to watch are the seasoned versions: bacon drippings poured off a pan that held onion, savoury spread-style fats blended with stock or garlic, gravy thickened with wheat flour and built on an onion base, and suet-style puddings where the fat is bound up with wheat. A jar labelled garlic oil with cloves floating in it is also not the same thing as a properly infused oil.

How to keep it low

Buy lard as a single-ingredient block or tub and check the label for onion powder, garlic powder, yeast extract or stock solids before it goes in the basket. Keep it covered in the fridge so it does not pick up odours, and scoop with a clean dry spoon so no crumbs of last night's dinner get stirred in. When rendering it at home, render plain pork fat on its own rather than skimming it off a pot that had onion and garlic in it, since what you skim off a seasoned stock is never purely fat. In a restaurant, the question worth asking is not about the fat but about what went into the pan first.

Common questions

is lard low fodmap

Yes. Lard is rated LOW at "Any typical portion", and that rating is estimated from its composition as rendered pork fat rather than measured in a tested serving. No FODMAP subgroup is recorded for it.

can you eat lard on the elimination phase

Plain rendered lard fits the low FODMAP elimination phase, since it is LOW at "Any typical portion". What needs checking is the seasoning and the food cooked in it rather than the fat itself. Personal tolerance varies, and any reintroduction work is done with a dietitian.

does frying in lard make food high fodmap

Frying neither adds nor removes FODMAPs, because heat does not break them down and nothing leaves the food. If onion or garlic goes into the pan, though, those pieces stay in the dish and bring their own fructans with them, so the answer is to leave the solid onion and garlic out rather than to swap the fat.

is lard the same as bacon fat

Not for this purpose. Bacon drippings are usually cured, seasoned, and often poured off a pan that also held onion or garlic, so a dish made with them can carry ingredients that plain rendered lard does not.