Grubby wrote:The analogy is cooking, in stir-frying you will often reach much higher temperatures than in "normal cooking" (boiling or western style frying). This has been proven to increase the chance of some types of cancer.
Grubby wrote:So HOW is roasting done?
Oolong tea undergoes a few delicate processes in order to produce the unique aroma and taste. Typical Oolong tea is processed according to the following steps:
Wilting (萎凋; wěidiāo): Sun dry or air dry to remove moisture partly.
Cooling: Cool off in shaded area.
Yaoqing (摇青; yáoqīng): Gently tossing leaves to bruise the edge of leaves to create more contacting surface for oxidation.
Cooling and Yaoqing are repeated multiple times.
Shaqing (杀青; shāqīng): The procedure is to stop oxidation with high heat. Premium leaves are usually stir fried in a large pan over high heat, large productions are done by machine.
Rouqing (揉青; róuqīng): The tea leaves are rolled into strands or nuggets before dehydration.
Roasting: Roasting with low heat to dehydrate tea leaves, this step can be repeated with temperature variations to produce flavors of choice.
This is all i could find right now, its kind of a bad representation, but i read about this so many times, its just impossible to remember where you read it. Although this article only talks about air polluting i am pretty sure its also harmful to eat stuff that has been heated so much(but don't quote me on that)
edit: ok, if the roasting is done with low heat then its probably safe. The temperature was my main concern.
Jbenenson thats a lousy argument. Lots and lots of Chinese people smoke too, that doesn't mean its a good idea.
Josephine Querido, of Cancer Research UK, said: "Heating cooking oil to very high temperatures can release chemicals into the air.
"But the level of chemicals in the fumes caused by cooking in the home is very small and there is no evidence to show this could increase cancer risk.
Grubby wrote:According to Dr. Ted Gansler, director of Medical Content for the American Cancer Society, eating excessive amounts of grilled meat or chicken can increase your risk of developing cancer.