For Black Patent Malt we have a term and definition in Beer Brewing.

Malted barley which has been roasted until it is black (or nearly so) in color, using a special roasting device. May be used in small amounts to impart color to beer, or in larger amounts to impart a dark brown or black color, and a sharp, roasted character. Similar to roasted barley. May be mashed or steeped.
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