Lemon peel will freeze for ages and defrost in excellent shape. Only use this tip if you have either grown your own lemons and not doused them in pesticide or purchased organic. You don't want to be scoffing a mouthful of pesticide along with your lemon zest.
Lemon or lime zest does taste slightly different, but it is usually inter changeable at a pinch in most recipes. > > Zest in big pieces because they thaw more easily without clumping.