What is Crisp ?
Crisp is (adj) 1. hard, which can be broken into pieces or crunched These biscuits are not crisp any more, they have gone soft. Pick an apple off the tree, they’re really very crisp. 2. sharp and cold It was a beautiful crisp morning, with frost glinting on the grass. She could see her breath in the crisp mountain air. (NOTE: crisper – crispest)
source: Easier English, Student Dictionary Upper Intermediate Level