Instruct: Classify a given Amazon review as either positive or negative.
Query: White Mountain Hand Crank Ice Cream Churn

This ice cream churn was expensive and difficult to transport to where I live overseas, in a country whose unreliable electricity makes it a good idea. It came without any instruction booklet or recipes whatsoever, and ground a fine black metallic powder all over the top of the icecream. I suggest you look for a more user-friendly alternative with instructions and no black gunk.