A Squeeze of lemon juice provides vivid taste to this frozen fruit smoothie. Mango gives a lot of sweetness without having to incorporate juice, however, if it's too tart in your case, a contact of agave will do the trick. Look at Recipe The pith and peel in the grapefruit https://zrsplhh.bloggazzo.com/21864830/smoothies-a-simple-way-to-eat-more-vegetables