Traditional egg drop soup can be low FODMAP, but the version you get at most restaurants probably isn’t. The soup itself is simple (broth, eggs, cornstarch, seasonings), and nearly all of those ingredients are naturally low in FODMAPs. The problem is the broth. Most restaurant and store-bought chicken broths contain garlic and onion, both high in fructans, which are one of the main FODMAP groups that trigger digestive symptoms.
Why the Broth Is the Real Problem
Eggs are almost entirely protein and fat, with only about 0.3 grams of carbohydrates per egg. Since FODMAPs are specific types of carbohydrates, eggs are essentially FODMAP-free. Cooking oils are the same story: they’re made up of fatty acids with no carbohydrates, so any oil you use is naturally low FODMAP.
Cornstarch, the thickener that gives egg drop soup its silky texture, is also allowed on a low FODMAP diet. Ginger and white pepper, the two most common seasonings, are safe as well. Even regular soy sauce, despite containing traces of wheat, is well tolerated on a low FODMAP diet according to Monash University, the research group that developed the FODMAP system. You don’t need to switch to tamari unless you’re avoiding gluten for a separate reason.
That leaves the broth as the only ingredient likely to cause trouble. Garlic and onion are staples in commercial chicken broth, and even small amounts of garlic can push a serving into high FODMAP territory. If you’re ordering egg drop soup at a Chinese restaurant, the broth almost certainly contains both.
How to Make It Low FODMAP at Home
The simplest fix is using a certified low FODMAP chicken broth. Brands like Gourmend make broths specifically formulated without garlic or onion. These give you the savory depth you need without the digestive risk. Read ingredient labels carefully on any broth you pick up, because garlic and onion powder show up in products that look plain from the front of the package.
You can also make your own stock. A basic low FODMAP version uses a chicken carcass or wings, carrots, bay leaves, thyme or rosemary, black peppercorns, and salt, all simmered in water. No onion, no garlic. Carrots, herb stems, and bell pepper scraps are all safe additions. If you’re not extremely sensitive, a single celery stalk is generally tolerated since you won’t be drinking quarts of the broth in one sitting. Avoid adding citrus rinds, starchy vegetables, or anything from the brassica family (cabbage, broccoli, cauliflower).
Once you have a safe broth, the rest comes together in about 15 minutes. Bring the broth to a simmer, stir in cornstarch mixed with a little cold water to thicken it, season with ground ginger, soy sauce, salt, and white pepper, then slowly drizzle in whisked eggs while stirring gently. That’s it.
Scallions: Use the Green Parts Only
A garnish of sliced scallions is traditional, but the white bulb and the green tops have very different FODMAP profiles. The green tops are low FODMAP in servings up to about ¾ cup (75 grams), which is far more than you’d sprinkle on a bowl of soup. They become moderate for fructose at around 1 cup (97 grams). The white bulb portion is much more restricted, with a low FODMAP limit of roughly 32 grams according to Monash testing.
For egg drop soup, slice only the green tops thinly and scatter them on at the end. You’ll get the fresh, mild onion flavor without the fructans concentrated in the bulb.
What to Watch for at Restaurants
Egg drop soup is one of the simpler Chinese restaurant soups, which makes it tempting to order. But restaurant kitchens build flavor from garlic, onion, and high-sodium seasoning bases as a matter of course. The broth is rarely made fresh for a single order. It’s typically a large batch flavored with aromatics you can’t see or taste individually but that add up.
If you’re in the elimination phase of a low FODMAP diet, restaurant egg drop soup is a gamble you’re better off skipping. During the reintroduction phase, when you’re testing your personal tolerance levels, you might find that a small bowl doesn’t bother you, especially if the restaurant uses a lighter broth. But there’s no reliable way to know what’s in it without asking, and kitchen staff may not know exactly what’s in a pre-made stock base.
A Good Option When You Control the Ingredients
Homemade egg drop soup is one of the more IBS-friendly comfort foods you can make. Every core ingredient, eggs, cornstarch, oil, ginger, soy sauce, and scallion greens, falls comfortably in the low FODMAP range. The only variable is the broth, and that’s an easy one to solve with a certified product or a homemade batch you can keep in the freezer. A pot of stock made on a weekend gives you the base for weeks of quick, safe meals.