Mustard is widely considered the healthiest condiment you can reach for. It’s extremely low in calories, contains almost no sugar or fat, and its core ingredients (mustard seed, vinegar, turmeric) each carry their own nutritional benefits. But the real answer is more interesting than a single winner. Several condiments deliver genuine health value, and the “healthiest” pick depends on what your body needs most: gut support, antioxidants, healthy fats, or simply a way to add flavor without adding junk.
Why Mustard Tops Most Lists
Yellow and Dijon mustard are built from a short ingredient list: water, mustard seed, vinegar, salt, and turmeric. A typical serving has around 3 to 10 calories, virtually no sugar, and negligible fat. That alone puts it ahead of most condiments, but mustard also has a nutritional bonus. Turmeric, the spice that gives yellow mustard its color, contains curcumin, a compound with well-documented anti-inflammatory properties. Mustard seeds themselves provide small amounts of selenium and omega-3 fatty acids.
The main watch-out with mustard is sodium. A teaspoon of Dijon can contain 100 to 130 milligrams, which adds up if you’re generous with it. Still, compared to soy sauce or teriyaki (which can hit 900 milligrams per tablespoon), mustard is relatively mild.
Salsa: Maximum Flavor, Minimal Calories
Fresh tomato salsa comes in at fewer than 10 calories per two-tablespoon serving, making it one of the lowest-calorie condiments available. It’s essentially chopped vegetables: tomatoes, onions, peppers, cilantro, lime juice. The tomatoes provide lycopene, an antioxidant that your body absorbs more effectively from cooked or processed tomatoes than from raw ones. Peppers add vitamin C, and onions contribute small amounts of quercetin, another protective plant compound.
The gap between store-bought and fresh matters here. Commercial salsas can contain added sugar. Mission Medium Chunky Salsa, for example, has 2 grams per two tablespoons. That’s modest compared to other condiments, but a fresh pico de gallo made at home will have essentially none. If you’re buying jarred, check the label and stick to brands where sugar isn’t in the first five ingredients.
Fermented Condiments and Gut Health
Kimchi and sauerkraut occupy a unique space among condiments because they deliver live bacteria that directly benefit your gut. The fermentation of these cruciferous vegetables produces multiple strains of lactic acid bacteria, the same broad family found in probiotic supplements. These aren’t just passing through your system. Research published in Applied Microbiology found that eating kimchi or sauerkraut was associated with reduced inflammatory markers in the blood, lower activity of harmful gut enzymes, and measurable shifts in gut bacteria composition.
The specific changes are worth noting. Kimchi consumption increased populations of fiber-degrading and butyrate-producing bacteria. Butyrate is a short-chain fatty acid that feeds the cells lining your colon and helps maintain the gut barrier. Sauerkraut intake boosted levels of beneficial species while increasing overall bacterial diversity, which is generally a sign of a healthier gut ecosystem. Kimchi consumption has also been linked to weight loss, reduced body fat, and improvements in fasting blood sugar, cholesterol, and insulin sensitivity.
One caveat: both kimchi and sauerkraut can be high in sodium. And the probiotic benefits only apply to unpasteurized versions, typically found in the refrigerated section. Shelf-stable jars have been heat-treated, which kills the live bacteria.
Vinegar and Blood Sugar Control
Apple cider vinegar has become a popular health condiment, and there’s real science behind its blood sugar effects. A meta-analysis in Frontiers in Nutrition confirmed that vinegar can improve glycemic control through several mechanisms: it slows gastric emptying (so sugar enters your bloodstream more gradually), reduces glucose production in the liver, enhances insulin secretion, and inhibits enzymes that break down starches and sugars. These effects are most relevant for people managing type 2 diabetes or blood sugar spikes after meals.
As a condiment, vinegar works best in salad dressings, marinades, or diluted in water before a carb-heavy meal. Plain vinegar is essentially zero calories. The compounds responsible for its effects come from acetic acid, which is present in all vinegar varieties, not just apple cider vinegar. Red wine vinegar and balsamic vinegar offer similar benefits, though balsamic has more sugar (about 2 grams per tablespoon).
Pesto and Tahini: Healthy Fat Options
Not every healthy condiment needs to be low-calorie. Pesto and tahini are calorie-dense but nutritionally rich, and they serve a different purpose than mustard or salsa.
A quarter-cup of pesto contains about 24 grams of fat, but most of it is mono- and polyunsaturated fat from olive oil and pine nuts. These fats are associated with better blood pressure, blood sugar, and cholesterol levels. Basil provides antioxidants, and garlic’s plant compounds have been shown to lower blood pressure and cholesterol. Pesto is best treated as a nutrient-dense addition rather than a free-pour condiment. A tablespoon or two on pasta, fish, or roasted vegetables gives you the benefits without overdoing calories.
Tahini, made from ground sesame seeds, is a standout source of calcium, which makes it particularly valuable if you don’t eat dairy. It also provides magnesium, iron, and antioxidants called lignans. Compared to peanut butter, tahini is lower in protein but richer in calcium. Peanut butter edges ahead for muscle recovery and energy thanks to its higher protein and fat content. Both can reduce LDL cholesterol and support cardiovascular health, so the better choice depends on which nutrients you’re looking to add to your diet.
Condiments With Hidden Sugar
The gap between the healthiest and unhealthiest condiments often comes down to sugar. Some of the most popular options contain as much sugar per serving as candy.
- Hoisin sauce: 17 grams of sugar per two tablespoons
- Sweet Baby Ray’s BBQ sauce: 16 grams per two tablespoons, with high fructose corn syrup as the first ingredient
- Bull’s Eye BBQ sauce: 12 grams per two tablespoons
- Fat-free salad dressings: 8 to 11 grams per two tablespoons (manufacturers replace fat with sugar to maintain flavor)
- Ketchup: 4 grams per tablespoon, which adds up fast when you’re dipping fries
For context, the American Heart Association recommends no more than 25 grams of added sugar per day for women and 36 grams for men. Two tablespoons of BBQ sauce can burn through nearly half that allowance. Teriyaki sauce (2 grams per tablespoon) and A.1. steak sauce (2 grams per tablespoon) are more moderate, but still worth tracking if you use them regularly. Even honey mustard, which sounds harmless, contains slightly more than 1 gram of sugar per teaspoon.
Choosing the Right One for You
If you want a single everyday condiment that adds flavor with almost no nutritional downside, yellow or Dijon mustard is hard to beat. If you’re focused on gut health, unpasteurized sauerkraut or kimchi offers benefits no other condiment can match. For heart health and healthy fats, pesto and tahini deliver meaningful amounts of protective nutrients. And if you simply want to eat more vegetables without thinking about it, salsa is an effortless way to do that.
The most practical approach is to keep several of these in rotation and swap them in for the sugar-heavy defaults. Mustard instead of ketchup on a burger. Salsa instead of ranch on a taco salad. Tahini instead of mayo on a sandwich. Small swaps like these shift your condiment calories from sugar and processed oils toward compounds your body can actually use.