How to make diastatic malt powder from barley malt grain?

Diastatic barley malt flour or powder is used by bakers to give texture and golden brown crust to the bread. Diastatic barley malt flour or powder is made by drying and grinding the sprouted barley grain. During this process, the enzymes within the sprouted barley grain are activated releasing sugar from the barley malt flour or starch which acts with the yeast letting it rise.
You should add very little quantity, of barley malt flour to the bread for best results. If you use it in excess the colour could get reddish instead of a golden brown. Some of the bread flour that you buy comes with diastatic malt in it already.