Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Sour

I got this for a friend who loves sour things. I figured she'd want to mix it in to drinks and things to make them more biting, but instead she just eats it out of the bag. Some people are pretty weird like that, but if you like sour stuff or need to make something more sour and don't feel like using something a little less space age (like a lemon), this stuff will not disappoint. Or, you know, if you want to just eat citric acid out of a bag.