The typical flameless ration heater has enough power to heat a pre-cooked "meal ready to eat" (MRE) 100 degrees over the ambient temperature within 10 minutes. Typical heaters, such as the Trekmates flameless outdoor cooker, quit rising in cooking temperature well before they reach 200º F (93º C). These flameless heaters are effective at their objective of heating up MREs, but they're not meant to do any actual cooking.