What is a biscuit? Biscuits are mostly sweet, small enough to be eaten with a hand, crisp (with the exception of cookies or macaroons), and consumed as a snack or treat rather than a full meal. They are not to be confused with cake: this will harden as it gets stale, whereas an aging biscuit will go soft! 27 retro biscuits ranked worst to best BBC Radio 4 - Radio 4 in Four - From Bourbons to Digestives: how biscuits got their names
