Grain kilning is where the grain is heated to stop it’s growth. Kilning is done to grains when you want to stop the grains from growing, so you can keep it and store it for longer times, so you don’t need to worry the grains will continue to grow. Kilning is done when the grain’s starting to grow (sprouting), and you want to stop this from happening, so you kiln the grains so you can store it.