From Adding A Refreshing Zing To Your Water To Marinating Your Fish To Perfection, Lemons Serve A Wide Range Of Culinary Functions. If You Use Only The Juice And Discard The Peel, Though, You May Be Doing Your Diet A Disservice. Lemon Peels Contain A Spectrum Of Vitamins, Minerals And Fiber That Can Give Your Menu A Nutritional Boost, Although You Would Have To Consuming Large Amounts Of Peel To Glean Significant Nutritional Benefits.