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also called potassium bitartrate, potassium hydrogen tartrate
About
Cream of tartar is a dense, powdery baking ingredient that weighs roughly 6.7 ounces (189 grams) per US cup.
Cream of tartar has a bulk density of roughly 6.7 ounces per cup (0.8 grams per milliliter). This fine powder packs noticeably tighter than all-purpose flour, though it remains lighter than granulated table salt. A common 4-ounce (113-gram) grocery tin holds just over half a cup (141 milliliters) of the substance. Because culinary recipes call for tiny amounts, it takes up minimal space on a pantry shelf.
From Wikipedia
Potassium bitartrate, also known as potassium hydrogen tartrate, with formula KC4H5O6, is the potassium acid salt of tartaric acid (a carboxylic acid)—specifically, l-( + )-tartaric acid. Especially in cooking, it is also known as cream of tartar.
Read more on Wikipedia →Text from Wikipedia’s “Potassium bitartrate” article, CC BY-SA 4.0.
1 on the site
One cup weighs
6.68 oz (189 g)
Quick answer
One US cup of cream of tartar weighs about 6.7 ounces (189 grams). That makes it roughly one and a half times heavier than an equal cup of all-purpose flour.
Typical figures, the same ones every comparison on the site uses; real ones vary.
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