A charcoal biscuit is a biscuit based on a powdered willow charcoal or activated carbon[1] mixed with ordinary flour, and made into dough with butter, sugar and eggs.[2]
- ^ Cite error: The named reference
jDisleywas invoked but never defined (see the help page). - ^ Davidson, Alan (1999). The Oxford Companion to Food. Oxford University Press. pp. 76. ISBN 0-19-211579-0.