Ugli fruit might not look very appetizing, but the pockmarked, discolored outside of this Jamaican native disguises a sweet interior that is practically seed-free. NUTRITION: Ugli fruit is fat free, cholesterol free and — as with most citrus fruit — a great source of vitamin C and fiber. There are about 45 calories in a serving. HOW TO CHOOSE: Pick fruits that are heavy for their size with no signs of drying on the exterior. Fresh uglies should dent slightly under pressure. HOW TO STORE: You can store ugli fruit at room temperature for up to five days or in the refrigerator for up to two weeks. HOW TO USE: Peel and eat for one of your daily fruit and veggie servings, or add some “ugliness” to your next fruit salad.