Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Suitable for cold fires

You know, preferably the type that doesn't burn. Took this product up to the Boundary Waters; it fits nicely into a Army pack/duluth pack and functions to give the pack a flat back.But after a day of use, the griddle began to warp badly and was covered with a black soot that made everything else dirty. The non-stick wasn't really non-stick, as the first thing I cooked on it ruined the surface. To be fair, the product description says campfire coals, but to keep it hot enough, we had to go a fire going. The pan was placed on two rocks about six inches from the ground.I threw it away as soon as I got home. I'll be looking for an alternative next year, and wouldn't recommend this unless you're in a very controlled cooking environment.