The Importance of Cream of Tartar | Cook's Illustrated (2024)

To find out, we made two lemon meringue pies, one with the requisite 1/2 teaspoon cream of tartar for the four-egg-white meringue and one without.

After a stay in the refrigerator, the meringue without cream of tartar showed beads of moisture on its surface. The pie prepared with cream of tartar emerged in much better shape, with a dry, smooth, bead-free meringue.

The explanation? When egg whites are whipped, the protein strands within begin to unwind and form a network that holds water and air bubbles in place. But egg whites contain sulfur atoms, which form strong bonds that can over-strengthen this network. Acidic cream of tartar slows the formation of the sulfur bonds, preserving the stability of the network so that air and water stay put.

The bottom line:

For smooth, stiff beaten egg whites that keep their shape, don’t skip the cream of tartar. If you don’t have cream of tartar, substituting 1/4 teaspoon lemon juice or white vinegar per egg white works almost as well.

The Importance of Cream of Tartar | Cook's Illustrated (2024)

FAQs

The Importance of Cream of Tartar | Cook's Illustrated? ›

Acidic cream of tartar

cream of tartar
Potassium bitartrate, also known as potassium hydrogen tartrate, with formula KC4H5O6, is a chemical compound with a number of uses. It is the potassium acid salt of tartaric acid (a carboxylic acid). In cooking, it is known as cream of tartar.
https://en.wikipedia.org › wiki › Potassium_bitartrate
slows the formation of the sulfur bonds, preserving the stability of the network so that air and water stay put. The bottom line: For smooth, stiff beaten egg whites that keep their shape, don't skip the cream of tartar.

Why is cream of tartar important? ›

Cream of tartar stabilizes the tiny bubbles in the egg whites, by precluding the egg proteins from sticking together. It thus speeds up the egg white whipping process and contributes to a stable, billowy, glossy meringue, perfect for cookies, topping pies, and folding into cake.

What else is cream of tartar good for? ›

Cream of tartar has many uses, including:
  • Making fluffier cakes. ...
  • Lifting and stabilizing whipped cream and meringue. ...
  • Preventing sugar crystallization. ...
  • Adding a tangy flavor to cookie recipes. ...
  • Preserving fruits and veggies.

Does cream of tartar expire or go bad? ›

Cream of tartar does not expire so long as you store it in a cool and dry space. When in doubt, check for a powdery, white appearance and a slightly acidic smell. Discard your cream of tartar if it has become discolored or if it has a strong smell.

What is the purpose of the cream of tartar as it relates to foams? ›

By preventing the proteins from clustering too close together, cream of tartar keeps egg white foam supple and elastic. The albumen's protein-rich cell walls stretch to their thinnest during baking, resulting in tall, tender-crumbed cakes.

Is cream of tartar good for your kidneys? ›

Cream of tartar may reduce the chances of UT infections. But, excess potassium levels in the blood put kidneys under pressure. It is because potassium is a potent diuretic. Therefore, an increase in potassium levels leads to a rise in the diuretic action of the kidneys, which is harmful.

Is it safe to drink cream of tartar everyday? ›

The FDA recognizes cream of tartar as a safe ingredient when consumed in small quantities. Ingesting high amounts of it may lead to hyperkalemia, or dangerously high potassium blood levels.

What happens if you don't use cream of tartar? ›

A frosting without crystalized sugar is a lot creamier, and any batter or meringue with stabilized egg whites yields a fluffier end result, The Spruce Eats explains. Without cream of tartar, you'll get the same baked good in the end, but the consistency may not be as flawless.

Is cream of tartar just baking soda? ›

Even though they're similar in colour, consistency and packaging, baking soda and cream of tartar are totally different ingredients. Baking soda is alkaline and commonly used in recipes that mix moisture plus an acidic ingredient (such as lemon juice, chocolate, buttermilk or honey) together to make batter rise.

What does cream of tartar do to meat? ›

Its acidic properties help break down the proteins in tough cuts of meat, resulting in more tender and succulent dishes. To tenderize meat or poultry, create a marinade by mixing cream of tartar with your desired seasonings, herbs, and a liquid like vinegar or wine.

Does cream of tartar need to be refrigerated? ›

Refrigeration is unnecessary for cream of tartar and can introduce moisture to the container when taken in and out of the fridge. Stick to storing it in a cool pantry or cupboard to maintain its quality.

What is another name for cream of tartar? ›

Also known as potassium bitartrate, cream of tartar is the powdered form of tartaric acid.

What does cream of tartar do in bread? ›

Achieving a good rise is essential for light and airy bread. Cream of tartar acts as a natural leavening agent when combined with baking soda. When the cream of tartar reacts with baking soda and moisture in the dough, carbon dioxide gas is released, causing the bread to rise.

What was the problem with using cream of tartar? ›

Hyperkalemia. Cream of tartar contains a significant amount of potassium. Consuming it in large quantities could lead to an excess of potassium in your blood, a condition known as hyperkalemia.

Why do people drink cream of tartar? ›

It's known for treating arthritis, combatting heartburn and even clearing up acne-prone skin. The alkaline in cream of tartar can also prevent and treat bacterial infections, help to lower your blood pressure and, of course, it tastes great in any baked good.

Why do you put cream of tartar in cookies? ›

Cream of tartar prevents the sugar in cookie dough from crystallizing when cooking. Without it, cookies tend to form a crispy texture. EHow claims that cream of tartar also encourages cookies to bake lighter by creating more air bubbles when it comes into contact with liquid.

Can I skip using cream of tartar? ›

In some recipes, you can leave out cream of tartar if there is no suitable replacement. You can simply omit cream of tartar from the recipe if you're making whipped egg whites, syrups, frostings, or icings.

What can be substituted for cream of tartar? ›

The Best Substitute for Cream of Tartar

For every 1/2 teaspoon of cream of tartar in the recipe, use 1 teaspoon lemon juice or white vinegar. As an example, if your cookie recipe calls for 1 teaspoon baking soda, add 2 teaspoons lemon juice instead of the cream of tartar.

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