Related Clues:
- A bit of a craze started with 10
- Go to get added flavour
- Fervour
- Relish - orange peel
- Piquancy - fruit rind
- Piquancy (eg from lemon peel)
- Fanatical enthusiasm
- Eager (if not fanatical) enthusiasm
- Enthusiasm and energy
- Energy (from a lemon?)
- Militancy
- Dedicated enthusiasm
- Keen excitement - citrus peel
- (Fanatical) enthusiasm
- Enthusiasm — grated lemon peel