"Twice cooked." Rusk or crispbread. Melba toast. Twice-baked biscuit (US: cracker). "Twice cooked" refers to the fact that it is first baked in a loaf form which is then sliced and recooked, resulting in a hard, crisp biscuit.
The most comprehensive food words site or culinary glossary site
Brought to you by the SoFAB Institute.