English speaking room

Hey there!
Girls, i have a quick question. Sorry if i posted it in the wrong section, but it's my first time asking Eng question here.

Anyways... Can you tell what's the difference between Meringue Powder and Cream of Tartar?

I know that Meringue Powder is "закрепитель"
But i have no clue how Cream of Tartar is in Russian.

Thank you