The Sauces and Dressings Quietly Knocking You Out of Ketosis

The ketogenic diet relies on maintaining a state of ketosis through strict carbohydrate control. Many people carefully track their macros only to be undone by seemingly innocent condiments.

Why Sauces Matter on Keto

Most commercial sauces and dressings contain added sugars and thickeners like cornstarch or flour. A single tablespoon of ketchup contains around 4g of carbs, while a standard serving of barbecue sauce can pack 10-15g. These small additions quickly add up, potentially pushing you over your daily carb limit.

Research shows that even modest carbohydrate intake can disrupt ketosis. A study by Hyde et al. (2019) found that metabolic benefits of ketosis diminished when carbohydrate intake exceeded 50g per day.

The Worst Offenders

1. Sweet Chilli Sauce: Contains up to 30g sugar per 100ml 2. Teriyaki Sauce: Typically 15-20g carbs per tablespoon 3. Fat-Free Dressings: Often replace fat with sugar and thickeners 4. Tomato Ketchup: High fructose corn syrup is common 5. Pre-made Pesto: Some brands add potato starch

keto-friendly condiment alternatives

What This Means in Practice

At Tesco, a 250g jar of Heinz Tomato Ketchup costs £2.50 and contains 23g carbs per 100g. Meanwhile, their own-brand mayonnaise contains just 1g carbs per 100g. During summer barbecues, opt for full-fat mayo or make your own sugar-free marinades rather than reaching for the sugary sauces.

Reading Labels Properly

Look beyond the ‘per serving’ information – manufacturers often list unrealistically small portions. Check:

• Total carbohydrates per 100g
• Ingredients list for hidden sugars (dextrose, maltodextrin)
• Thickeners like modified starch

Frequently Asked Questions

Q: Are all shop-bought salad dressings off-limits?

A: Not necessarily. Full-fat creamy dressings like ranch or blue cheese often have minimal carbs. Always check labels – some ‘light’ versions replace fat with sugar.

Q: How can I add flavour without carbs?

A: Herbs, spices, vinegar, mustard and quality olive oil are virtually carb-free. Lemon juice and garlic make excellent flavour bases.

Q: Are sugar-free sauces keto-friendly?

A: Sometimes. While they eliminate sugar, some contain maltodextrin which has a high glycemic index. Check total carb counts.

The Bottom Line

Hidden carbs in sauces and dressings are among the most common reasons people struggle to maintain ketosis. By carefully reading labels and opting for homemade alternatives, you can enjoy flavourful meals without compromising your metabolic state. If you’d rather not do the macro maths yourself, the Keto Dieting app does it for you on Google Play and the App Store.

References

1. Hyde PN, Sapper TN, Crabtree CD, et al. (2019). Dietary carbohydrate restriction improves metabolic syndrome independent of weight loss. JCI Insight. https://doi.org/10.1172/jci.insight.128308
2. Paoli A, Rubini A, Volek JS, Grimaldi KA (2013). Beyond weight loss: a review of the therapeutic uses of very-low-carbohydrate (ketogenic) diets. European Journal of Clinical Nutrition. https://doi.org/10.1038/ejcn.2013.116