Many common condiments are low FODMAP, including mustard, mayonnaise, soy sauce, most vinegars, barbecue sauce, and Worcestershire sauce. The catch is that familiar brands often sneak in garlic powder, onion powder, or high-fructose corn syrup, which can push an otherwise safe condiment into high FODMAP territory. Knowing which condiments are safe in principle and how to check labels in practice makes the elimination phase far more manageable.
Condiments That Are Generally Safe
Monash University, the research group behind the low FODMAP diet, lists several condiments as low FODMAP options: barbecue sauce, mayonnaise, soy sauce, chutney, Worcestershire sauce, salsa, mustard (including Dijon), satay sauce, mint jelly, and gherkins. These are considered safe at typical serving sizes, though the specific threshold varies by product. The common thread is that their base ingredients, things like vinegar, oil, tomatoes, and spices, are naturally low in fermentable carbohydrates.
Vinegars and Mustards
Vinegar is one of the safest flavor boosters on a low FODMAP diet. White vinegar, red wine vinegar, apple cider vinegar, rice vinegar, and balsamic vinegar are all low FODMAP. That makes them ideal for homemade salad dressings, marinades, and pickling. Balsamic vinegar does contain some natural sugars, but the amount in a normal drizzle is not enough to cause trouble for most people.
Mustard is similarly reliable. Yellow mustard, Dijon, and whole-grain mustard are all safe choices. Just watch flavored varieties that add honey (a high FODMAP sweetener) or garlic to the mix.
Mayonnaise and Creamy Sauces
Plain commercial mayonnaise is typically low FODMAP because its core ingredients are egg yolks, oil, and vinegar or lemon juice. The problems start with flavored versions. Garlic aioli, chipotle mayo, and “zesty” varieties frequently contain garlic powder, onion powder, or both. When choosing a jar off the shelf, scan the ingredient list for garlic powder, onion powder, “natural garlic flavor,” high-fructose corn syrup, honey, and agave nectar. If none of those appear, you’re likely fine.
If you want garlic flavor without the FODMAPs, garlic-infused oil is a well-known workaround. FODMAPs are water-soluble, not fat-soluble, so infusing whole garlic cloves into oil transfers the flavor without the problematic sugars. A mayonnaise made with garlic-infused oil gives you something close to aioli that won’t trigger symptoms.
Soy Sauce, Tamari, and Fish Sauce
Regular soy sauce is low FODMAP at standard serving sizes, roughly a tablespoon. If you’re also avoiding gluten, tamari is a good swap. Traditional soy sauce contains 40 to 60 percent wheat, while tamari is made with 100 percent soybeans and no wheat. Some tamari brands have been lab-tested and certified low FODMAP even when their ingredient lists include small amounts of garlic, honey, or onion concentrate, because the final product tests below the FODMAP threshold.
Fish sauce is another staple that’s generally safe. Its ingredients are usually just fish, salt, and water, none of which contain FODMAPs. Check the label for added sweeteners, but most traditional fish sauces are clean.
The Ketchup Question
Ketchup is tricky. Some low FODMAP resources list it as safe, while others, including a Kaiser Permanente clinical handout, categorize it as high FODMAP during the elimination phase. The issue comes down to the recipe. Many mainstream ketchups use high-fructose corn syrup as a primary sweetener, and some contain onion powder or garlic powder. Both push the FODMAP content up. If you want ketchup, look for brands sweetened with cane sugar instead of high-fructose corn syrup, and confirm the label is free of onion and garlic ingredients. Certified low FODMAP ketchup from specialty brands like Fody Foods removes the guesswork entirely.
Hot Sauce and Spicy Condiments
Plain chili peppers, vinegar, and salt are all low FODMAP, which means simple hot sauces built from those ingredients are safe. Think of a basic Louisiana-style hot sauce: peppers, vinegar, salt. That combination works well.
Sriracha is more complicated. Traditional sriracha contains garlic, one of the highest FODMAP ingredients. It appears in the Monash app as low FODMAP only at a very small serving size, and the margin between safe and symptomatic is narrow. For a condiment you actually want to squeeze generously, that’s not practical. Gochujang, the Korean fermented chili paste, often contains garlic and onion in significant amounts too, so it’s best treated with caution.
When shopping for hot sauce, look for short ingredient lists: chili peppers, distilled or apple cider vinegar, salt, and small amounts of sugar. Several brands now make garlic-free and onion-free sriracha alternatives that have been Monash-certified. Homemade chili oil, made by infusing chili flakes into a neutral oil, is another easy way to add heat with full control over what goes in.
Sweet Condiments and Preserves
Maple syrup is low FODMAP at about one tablespoon per serving, making it a useful sweetener for dressings, glazes, and baking. Honey, on the other hand, is high FODMAP because of its excess fructose content, so it’s best avoided during elimination.
Fruit jams and preserves depend entirely on the fruit. Strawberry and raspberry jams tend to be safer choices because those fruits are lower in FODMAPs. A one-tablespoon serving of a simple raspberry chia jam, for example, sits comfortably in the low FODMAP range. Avoid jams made with apple, pear, mango, or watermelon, and skip any that use high-fructose corn syrup or honey as a sweetener. Checking the sugar source on the label matters just as much as checking the fruit.
How to Read Labels for Hidden FODMAPs
The biggest traps in condiment shopping aren’t the obvious ones. You probably already know to avoid garlic and onion. The sneakier culprits are terms like “natural flavors” (which can include garlic or onion extracts), onion salt, garlic salt, and ingredients like inulin or chicory root, which are high FODMAP fibers sometimes added to processed foods. Molasses and agave syrup are also high FODMAP sweeteners that show up in barbecue sauces and salad dressings.
A practical rule: the shorter the ingredient list, the safer the product. Condiments with five or six recognizable ingredients are far easier to evaluate than ones with twenty. When in doubt, the Monash University FODMAP app has the most comprehensive database of tested foods and serving sizes, and it’s worth the small cost if you’re actively in the elimination phase.
Certified Low FODMAP Brands
If label reading feels exhausting, several companies now make full lines of condiments specifically for the low FODMAP diet. Fody Foods offers ketchup, salsa, barbecue sauce, taco sauce, and stir-fry sauces, all made without onion or garlic and independently lab-tested. Their products are also gluten-free and vegan. Other certified options include specialty hot sauces and tamari products that have passed FODMAP-friendly laboratory testing. These products cost more than their mainstream counterparts, but they eliminate the uncertainty completely.