Baking Soda/ Cream of Tartar question

rdeans, Jul 11, 7:03am
Can I make this mixture in advance and keep it as "Baking Powder" or does it need to be made fresh each time. Thanks

mypeaches, Jul 11, 12:47pm
I make about half cups worth at a time, never had a problem. I keep it in a small tupperware container to keep it fresh:-)

rdeans, Jul 11, 8:52pm
Thanks for your reply........................ Will try the same.