... apples. No color change will happen to foods you've sliced as sometimes occurs with steel blades ... or chopping, such as bones and fishbone, so except for that, you can use ceramic knives for frozen meat, ... to the hardest substance in the worlddiamond(100), so you do not need to grind it at all as ... knives can cut alone, so you do not need any special implement when cooking, you just use it with general ...