Herbs & Spices

Condiments and broths with gestational diabetes: stock cubes, mayonnaise, pesto and fermented pastes

Condiments and broths are eaten by the spoonful, so how they are made and how much salt they carry matter more in pregnancy than their carbohydrate. This guide takes the 72 condiments and broths under the Herbs & Spices guide and asks the pregnancy questions first: what is in a stock cube, why dashi carries an iodine note, when mayonnaise counts as a raw-egg food, and whether the cheese in pesto matters. Seven foods here carry a pregnancy rule, each about how the food is made, not about carbohydrate. Then it turns to the spoon. Miso and fish sauce carry more salt in a tablespoon than the NHS's whole high-salt threshold, tomato purée multiplies its sugar on the way to sun-dried paste, and the vinegars carry almost nothing. Every figure below is per 100 g; USDA's spoon weights turn them into portions.

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72 foodsLast reviewed: September 1, 2026Sources

Vegetable Broth
Bone Broth
Tomato purée
Lemon Juice

How these were chosen

The broths with the least salt, the least concentrated tomato, two near-zero acids, a dip with no added salt, and pesto and dashi for their pregnancy questions. Mustard, salsa, hummus, tzatziki and soy sauce are featured in the Herbs & Spices guide.

What to look for

  1. Broths and stock cubes: the salt is in the cube

    The broths here run from 60 mg of sodium per 100 g in vegetable broth to 410 mg in fish stock, all under the NHS's high-salt threshold of 600 mg; USDA's ready-to-serve chicken broth lists 371 mg. Stock cubes are the exception: USDA lists dry chicken bouillon at 23,875 mg of sodium per 100 g and weighs a cube at 4 g, so one cube carries about 950 mg, more than twice what 100 g of the saltiest broth here does. The NHS suggests low-salt stock cubes and sets the adult limit at 6 g of salt a day.[1] [2] [3]

  2. Dashi: a broth made from kelp

    Dashi and kombu dashi are the two broths here with a pregnancy rule, and it is about iodine, not salt: both are built on kombu, a brown seaweed. The British Dietetic Association's iodine fact sheet says the iodine in seaweed is high and variable and that brown seaweeds such as kelp should not be eaten more than once a week, especially in pregnancy. The pages here mark both as limit for that reason.[4]

  3. Mayonnaise: when it counts as raw egg

    Mayonnaise is egg yolk and oil, and the question is whether the egg was raw. The NHS lists mayonnaise made with raw British Lion eggs as safe to eat in pregnancy; the FDA says recipes served with raw egg should use pasteurised eggs, and names pregnant women among those at greater risk from salmonella. The two mayonnaise pages here take the stricter line and ask for pasteurised egg. USDA's regular mayonnaise is 0.6 g of carbohydrate and 75 g of fat per 100 g; a 13.8 g tablespoon is about 10 g of fat.[1] [5] [6]

  4. Pesto: the cheese is hard, so it's fine

    Pesto's cheese is parmesan or pecorino, and the NHS lists hard cheeses such as parmesan as safe in pregnancy whether pasteurised or not. What pesto does carry is fat: 45.5 g per 100 g here, 37.6 g in USDA's refrigerated pesto, with 600 to 680 mg of sodium, at the NHS's high-salt line. After mayonnaise it is the most energy-dense food in this category.[1] [5]

  5. Fermented pastes and brines: read them by the spoon

    Miso paste lists 3,728 mg of sodium per 100 g here and in USDA's tables, and USDA weighs a tablespoon at 17 g, so one spoon carries about 630 mg, above the NHS's 600 mg threshold on its own. Fish sauce is 7,850 mg per 100 g, a tablespoon about 1,400 mg. Gochujang carries 2,540 mg of sodium and 27 g of sugar; shrimp paste 9,150 mg. The shrimp paste and sauerkraut juice pages add a listeria note because neither is heat-treated; no agency page names either, and the note is the pages' own.[1] [2]

  6. Tomato and fruit purées: concentration is the whole story

    Tomato purée carries 8.6 g of carbohydrate and 5 g of sugar per 100 g here, tomato paste 19 g and 12 g, and sun-dried tomato paste 43.5 g and 37.6 g: the same fruit, with more water removed each time, and only the last crosses the NHS's 22.5 g line for high sugar. Unsweetened applesauce carries 9.6 g of sugar per 100 g and the sugar-free jam 5 g. Garlic paste, at 30 g of carbohydrate, is the surprise; used by the teaspoon it adds little, but it is not the near-zero food garlic looks like.[2]

Side by side

Broths and stocks, by salt

Per 100 g
FoodCarbsProteinSodiumBlood sugar impact
Vegetable Broth
1.5 g0.3 g60 mglow
Bone Broth
0.2 g2.5 g180 mglow
Chicken Broth
0.3 g0.5 g250 mglow
Beef Broth
0.5 g1.5 g350 mglow
Ham Stock
0.5 g2.5 g400 mglow
Fish stock
0.5 g1.2 g410 mglow

All under 2 g of carbohydrate per 100 g; sodium runs from 60 to 410 mg, a fraction of a stock cube's.

Fermented pastes and brines

Per 100 g
FoodCarbsSugarsSodiumBlood sugar impact
Kimchi Juice
3.1 g1 g950 mglow
Sauerkraut juice
Caution
3.4 g1.8 g750 mglow
Gochujang
43.5 g27.2 g2,540 mghigh
Miso Paste
25.4 g6 g3,728 mglow
Fermented Bean Paste
25.4 g6 g4,200 mglow
Shrimp Paste
Caution
2.1 g0.5 g9,150 mglow

Gochujang carries the carbohydrate; shrimp paste and the bean pastes carry the salt.

Tomato and fruit purées

Per 100 g
FoodCarbsSugarsFiberBlood sugar impact
Tomato purée
8.6 g5 g2.9 glow
Unsweetened Applesauce
11.3 g9.6 g1.2 gmedium
Unsweetened Pumpkin Puree
12 g5 g5 gmedium
Tomato Paste
19 g12.2 g4.1 glow
Sun-dried Tomato Paste
43.5 g37.6 g12.2 gmedium
Sugar-Free Jam
10 g5 g2 glow

From 8.6 g of carbohydrate per 100 g in tomato purée to 43.5 g in sun-dried tomato paste, as water is removed.

Aromatic pastes and vinegars

Per 100 g
FoodCarbsSugarsSodiumBlood sugar impact
Rice Wine Vinegar
0.1 g0 g2 mglow
Apple Cider Vinegar
Caution
0.9 g0.4 g5 mglow
Verjus
6 g5.5 g5 mglow
Ginger Paste
10.5 g1.5 g250 mglow
Curry Paste
15.2 g8.5 g2,500 mglow
Garlic Paste
30.2 g1 g580 mglow

The vinegars carry almost no carbohydrate; garlic paste carries 30 g and curry paste 2,500 mg of sodium.

Figures from each food's entry in this library. Open a food for its full profile and portion notes.

All foods in Condiments and Broths

72 foods in this category, each rated for glycemic impact and blood sugar effect.

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Common questions

Can I eat mayonnaise while pregnant?

Made with pasteurised egg, the pages here say yes. The NHS also lists mayonnaise made with raw British Lion eggs as safe; the FDA's advice for raw-egg recipes is to use pasteurised eggs, with pregnant women among those at higher risk from salmonella. The mayonnaise pages here follow the FDA line. Its carbohydrate is under 1 g per 100 g; the fat is 75 g.[5] [6]

Is pesto safe in pregnancy?

Yes on the cheese: parmesan and pecorino are hard cheeses, which the NHS lists as safe in pregnancy pasteurised or not. Pesto carries 4 g of carbohydrate per 100 g but 45.5 g of fat and 680 mg of sodium here.[5]

How much salt is in a stock cube?

By USDA's figures, a 4 g chicken bouillon cube carries about 950 mg of sodium, and a 3.6 g beef cube about 860 mg. The NHS suggests low-salt stock cubes; the ready-made broths here carry 60 to 410 mg per 100 g.[1] [3]

Is miso okay with gestational diabetes?

Its carbohydrate is modest, 25 g per 100 g here and in USDA's tables, so a 17 g tablespoon carries about 4 g. The salt is the issue: that same tablespoon carries about 630 mg of sodium, above the NHS's high-salt threshold of 600 mg by itself. Miso broth, at 350 mg per 100 g, is the diluted form.[1] [2]

Keep reading

Important Safety Information

Every pregnancy is different, and gestational diabetes is managed differently depending on your readings, your medication and how far along you are. The ratings and portions on this page are general information — not a diagnosis, a treatment plan or a medical device — and they cannot see your results.

Low blood sugar:
If you take insulin or diabetes medication, eating less carbohydrate than your team planned for can push your blood sugar too low. Treat a reading below 70 mg/dL (3.9 mmol/L), or symptoms such as shaking, sweating, confusion or a racing heart, with fast-acting carbohydrate immediately and retest after 15 minutes. Never use this page as a reason to skip or shrink a meal you were told to eat.
Carbohydrate and ketones:
Cutting carbohydrate hard to force a number down is not safe in pregnancy — it can produce ketones. Published guidance sets a minimum of 175 g of carbohydrate per day in pregnancy. Readings that stay above target for several days need your care team, not a smaller portion.
Medication and insulin:
The portions here are generic and know nothing about your insulin doses, your metformin, or the steroids given to mature your baby's lungs — all of which change how a meal affects you. Never adjust a dose or a mealtime based on this page.
Food safety in pregnancy:
Blood sugar is not the only thing that makes a food suitable while you are pregnant. Some foods with excellent glycemic numbers still carry mercury, vitamin A, listeria or alcohol risks, and those are judged separately from the ratings shown here. Check your national pregnancy food-safety guidance before adding an unfamiliar food.
What these ratings can and cannot tell you:
Glycemic index values, impact ratings and maximum servings are population averages taken from published tables. Two people eating the same food can get very different readings, so your own meter is the only measurement that describes you. Nutrition figures are indicative per 100 g and vary with brand, ripeness and preparation.

Contact your care team the same day if: your readings stay above target for several days; you have a reading below 54 mg/dL (3.0 mmol/L) or needed someone else's help to treat a low; you test positive for ketones; or your baby is moving less than usual. Seek emergency care for confusion, fainting, repeated vomiting, or a low you cannot bring back up.

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