Food Library

Herbs, spices and sauces with gestational diabetes: where the sugar and salt hide

Herbs and spices are usually used by the pinch, so the carbohydrate they add to a meal is small even when the figure per 100 g looks high: ground cinnamon is about 81 g per 100 g by USDA's figures, 53 g of it fibre. Sauces are different. Ketchup, barbecue sauce, hoisin and chutney carry 25 to 55 g of carbohydrate per 100 g in this library, much of it sugar, and soy sauce, fish sauce and stock can carry a lot of salt. This guide covers sweet sauces and salty ones, what the evidence does and doesn't show for cinnamon and fenugreek, and the herbs that are fine in cooking but not as teas or supplements in pregnancy. Herbs, spices and condiments each have a page of their own, and every food is listed further down.

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144 foodsLast reviewed: September 9, 2026Sources

Herbs & Spices: foods and gestational diabetes

How these were chosen

Sauces and dips with little carbohydrate, the sugar-free versions of two sweet sauces, soy sauce for its salt, and cinnamon and parsley for their notes. Borage and epazote are marked avoid in this library and aren't featured.

What to look for

  1. Sweet sauces carry the carbohydrate

    USDA lists ketchup at about 27 g of carbohydrate per 100 g, 21 g of it sugar, barbecue sauce at 41 g and hoisin sauce at 44 g. In this library, chutney carries 55 g and pickle relish 38 g, while mustard, hot sauce and salsa carry under 10 g. The sugar-free ketchup and barbecue sauce here carry about 12 g and 8 g.[1]

  2. Soy sauce, fish sauce and stock: watch the salt

    The NHS says adults should have no more than 6 g of salt a day, and names soy sauce, gravy granules, ketchup, mustard, mayonnaise and brown sauce among the sauces that can be high in salt; it suggests low-salt soy sauce and stock cubes. USDA lists soy sauce at about 5,500 mg of sodium per 100 g and fish sauce at about 7,900 mg.[1] [2]

  3. Cinnamon and fenugreek: the blood-sugar evidence is weak

    The US National Center for Complementary and Integrative Health says it is unclear whether cinnamon supplements help with diabetes, and that the studies suggesting fenugreek may lower blood sugar in type 2 diabetes were often not of high quality. Some food pages in this library describe these effects more confidently than the evidence does; go by this summary.[3] [4]

  4. Cinnamon and fenugreek in pregnancy: food amounts

    The same centre says cinnamon appears safe in pregnancy in the amounts found in food, but that larger amounts of Ceylon cinnamon are considered unsafe, and that cassia cinnamon can contain a lot of coumarin. It says fenugreek is not safe in pregnancy in amounts greater than those in food, and has been linked to birth defects. This library limits both to cooking amounts.[3] [4]

  5. Herbs: cooking amounts, not teas, oils or supplements

    The NHS says not to take herbal medicines if you are pregnant or breastfeeding, and to drink no more than 4 cups of herbal tea a day, avoiding any with liquorice root. In this library, parsley, sage, lemongrass, lovage, tulsi and several other herbs are marked for cooking and salad amounts only, not as juices, teas, essential oils or supplements, and borage and epazote are marked avoid.[5] [6]

Side by side

Sauces

Per 100 g
FoodCarbsSugarsSodiumBlood sugar impact
Ketchup
25 g22 g1,114 mgmedium
Sugar-Free Ketchup
11.8 g5.9 g1,118 mglow
Barbecue Sauce
38.5 g32.2 g950 mghigh
Sugar-Free BBQ Sauce
8.1 g2.5 g950 mglow
Hoisin Sauce
53.5 g48.2 g2,450 mghigh
Teriyaki Sauce
16 g12 g2,500 mghigh

The sugar-free ketchup carries about half the carbohydrate of the regular one, and the sugar-free barbecue sauce about a fifth.

Salty condiments

Per 100 g
FoodCarbsSodiumBlood sugar impact
Soy Sauce
5.6 g5,493 mglow
Tamari
5.6 g4,680 mglow
Fish sauce
1.2 g7,850 mglow
Miso Paste
25.4 g3,728 mglow
Coconut aminos
25 g2,000 mglow
Chicken Broth
0.3 g250 mglow

Fish sauce carries the most sodium here; coconut aminos carries less sodium than soy sauce but more carbohydrate.

Dips

Per 100 g
FoodCarbsSugarsCaloriesBlood sugar impact
Hummus (plain, no added salt)
14.3 g0.7 g166 kcallow
Baba Ganoush (no added salt)
10.5 g4.1 g122 kcallow
Tzatziki (plain)
5 g4 g95 kcallow
Pesto
4.2 g2.2 g460 kcallow
Salsa
7.8 g4.5 g36 kcallow
Tahini Sauce (diluted)
10.6 g0.3 g298 kcallow

All carry under 15 g of carbohydrate per 100 g; pesto carries by far the most energy.

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

All foods in Herbs & Spices

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

Condiments and Broths

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Common questions

Does cinnamon lower blood sugar?

The evidence doesn't show it. The US National Center for Complementary and Integrative Health says it is unclear whether cinnamon supplements help with diabetes. As a spice in food, it appears safe in pregnancy; this library suggests keeping cassia cinnamon to about half a teaspoon a day, because of its coumarin.[3]

How much sugar is in ketchup?

About 21 g of sugar in 27 g of carbohydrate per 100 g, by USDA's figures, so 15 g of ketchup carries about 4 g of carbohydrate. The sugar-free ketchup in this library carries about 12 g per 100 g.[1]

Is fenugreek safe in pregnancy?

In the amounts used in cooking, yes. The US National Center for Complementary and Integrative Health says it is not safe in pregnancy in amounts greater than those found in food, and has been linked to birth defects, so avoid fenugreek supplements, powder doses and teas.[4]

Is soy sauce okay with gestational diabetes?

Its carbohydrate is small, about 5 g per 100 g by USDA's figures, and a splash carries very little. The salt is the issue: about 5,500 mg of sodium per 100 g. The NHS suggests low-salt soy sauce.[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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