Lemon Rind to Smoothies: Adding 1/3 Lemon with the rind to your morning smoothie will cut the bitter green taste of the veggies. Lemon peel also contains rutin (a Vitamin C) that will help to make the blood vessels stronger so that it cuts down on bruising (an issue with older people and people on coumadin or Blood Type O people who take synthetic Vitamin E in gel caps—which they are not really supposed to do.)