For tips on how to select the best citrus available, read more. Normally we equate bright oranges and yellows with the summer season, but did you know that citrus is actually a winter fruit? Oranges, lemons, limes, and grapefruit are at their prime in the colder months so take advantage of them while you can! Not only are the citrus fruits in this diverse group delicious and refreshing, they earn their definition of an all-star food for their richness in compounds called flavonoids, which have anticancer properties. Citrus fruit flavonoids have been shown to inhibit the growth of cancer cells and prevent the spread of tumors. The vitamin C in citrus fruit strongly enhances the absorption of iron in food. Vitamin C binds to iron in the digestive tract and the iron-vitamin C complex is absorbed together. Try having a spinach salad with some mandarin oranges tossed on top! Here's how to pick out the best citrus at the store: Hold the fruit to see how heavy it is. The heavier the fruit, the juicier it will be. If it is light, choose again. Light fruit means that the juice has dried up. Check for smooth peels. Make sure the skins are firm and not mushy. The thinner the peel, the larger the fruit inside. Avoid any mushy spots. It can be squishy (juicy), but it should not be mushy or soft. The fruit should smell fragrant and a bit sweet, especially at room temperature. An off smell means an off-putting piece of fruit.