Review of Blackberry Flavor-TFA:

Contrary to what other people say about this product, I found it to be too sweet and not at all like a fresh blackberry.  I'm a big fan of blackberries and used to pick them a lot as a child.  Then again, a more tart blackberry flavoring would probably have more malic acid in it, and I'm not convinced of the safety of inhaling that.  It's more like blackberry cobbler like my grandma used to make except with an artificial sweetener instead of sugar.  Very strong, and not bad mixed with other flavors.