Definition of charcoal biscuit in English:
A biscuit containing wood charcoal to aid digestion.
- Other starters included smoked salmon pate with citrus coulis and charcoal biscuits or brown bread for €8.50; and a very well priced half dozen of fresh Kilkee Atlantic oysters, served with brown bread for €10.
- Miss Meldrum always ate charcoal biscuits in the afternoon - they looked rather like black dog biscuits, but I never understood what they were for.
- Charcoal grills take lot longer to cool as you must wait for the burnt charcoal biscuits to completely cool before removing them, and doing this is a messy proposition.