Is the black part of foods that got burning - called 'coal'?
When putting a steak on a grill, sometimes it gets burn and we see black scorched place where the fire touched it (See the attached photo below, that visualizes what I'm saying). What is this black matter called? The same can be with a piece of bread in a toaster. Can I call it coal?
Based on Cambridge dictionary it seems that this name is for "a hard, black substance that is dug from the earth in pieces, and can be burned to produce heat or power, or a single piece of this". So, it seems that I can't use it, then if it is true, what's the name for this thing?