What should I check in low-calorie sauces or syrups?

Compare ingredients, nutrition and your actual portion. Small values for a few millilitres do not describe the whole bottle or every serving size.

Check salt, sugars, sweeteners and warnings. Consider the sauce flavour and intended use or the syrup dilution instructions.

Check storage after opening: some products need refrigeration. Marking the opening date on the pack can help you follow those instructions.