Skip to main content

Cream of tartar is a powdered ingredient used in baking, described here as potassium tartrate. Potassium is its main mineral contribution: the supplied data list 20780mg per 100g. The same amount provides 1005 kJ of energy, with 0g of fat and 0g of salt.

Potassium supports normal nerve signalling and muscle function and helps regulate fluid balance in the body. Its high concentration is relevant to people who need to limit potassium, including some people with kidney disease. Cream of tartar is generally used in small quantities, so the amount consumed depends on the recipe. Full nutritional figures are in the tables below.

Nutrition per 100g

Nutrient

Per 100g

Energy

239 kcal

Energy

1005 kJ

Fat

0g

of which saturates

0g

Carbohydrate

0g

of which sugars

0g

Protein

0g

Salt

0g

Alcohol

0g

Water

0g

Cholesterol

0mg

Vitamins and minerals per 100g

Nutrient

Per 100g

Vitamin A (retinol equivalent)

0µg

Vitamin D

0µg

Vitamin E

0mg

Vitamin C

0mg

Thiamin (B1)

0mg

Riboflavin (B2)

0mg

Niacin (B3)

0mg

Vitamin B6

0mg

Vitamin B12

0µg

Folate

0µg

Calcium

0mg

Iron

0mg

Magnesium

0mg

Phosphorus

0mg

Potassium

20780mg

Sodium

0mg

Zinc

0mg

Copper

0mg

Selenium

0µg

Iodine

0µg

About these figures

Values are per 100g of the food as described (As potassium tartrate). "Trace" means only a very small amount was found. Nutrients that were not measured are not shown. Salt is calculated from sodium.

Further reading and references

  • Public Health England. McCance and Widdowson's The Composition of Foods Integrated Dataset 2021. GOV.UK.

Article history

The information on this page is written and peer reviewed by qualified clinicians.
  • 4 Nov 2026 | Latest version
  • 3 Nov 2026 | Originally published