Keep the pulp from fruit and veggies in your smoothie as these provide Look at what you're about to blend so you know what you're eating. Frozen fruit (with no added sugar) will make your smoothies thick and frosty. If you decide to add more greens, tartness from fresh lemon or lime juice Here are some healthy smoothie recipes to try for a nutritious boost. A good ratio to follow is 70% veggie and 30% fruit, Jeffers says. keep in mind: smoothies may rob you of the satisfaction you get from eating.