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It's not a good idea to freeze or store foods in enamel because the acids in the food can eat into the enamel. That could cause food to be contaminated with lead, if it's older cookware, or the enamel itself. It's best to store all foods in glass or certain types of plastic containers.
Actually food grade silicon oil is used in pharmaceutical industry , it is used in lyophilizers for fluid circulation through out shelves and lines
The enamel is attacked by acids when acids from food and drinks weaken the outer layer (enamel) to expose the dentine.
Both your mandible and zygomatic bones help chew the food
Freund container has them: http://www.freundcontainer.com/product.asp_Q_pn_E_1966_A_cn_E_60 I understand they aren't food grade though:( Someone tell me if they find a food grade container like this.
The enamel trays are used for heat-based cooking (convection, oven, broil) in the Advantium. You can either place food right on it to cook and brown, or place a glass baking dish on it. You can not use the enamel tray for microwaving.
because it comes in contact with food and hard things
Corn that is food grade is meant for human consumption. This is the corn not meant for cattle or pasture. The corn will taste better than non food grade corn.
Food grade rock salt can be found in grocery stores, like Kroger and Walmart. Food grade rock salt can be found in the seasoning section.
Enamel pots are a great way to cook. You don't have to worry about the metal leaching out into your food like you do with metal pans. But they don't last very long because the enamel is very soft, that is why it breaks off so easy. To make it last longer use wood utensils instead of metal ones.
Energy,Growth and Repair.
I think so, so long as the enamel is not flaking off into the food.