Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Only one I'll buy

I've been gluten free for 4 years, and I have a son who has been gluten free for 9 years and another son who has been gluten free for 2 years (we're all celiac disease). This is the only all-purpose flour I'll buy. You can use it to convert any non-gluten free recipe you have and my non-celiac friends are surprised when I eat what I bring because they would never guess that it's gluten free. Other flours have made the product crumble, but not Beth's.