Pomelo Speaking of pomelos, like the mandarin, this is another original citrus. It’s also huge, growing as large (and sometimes larger) than a person’s head.

Citrus fruits are famous for their high vitamin C content — and for good reason. One navel orange contains 83 milligrams of vitamin C and one half of a red grapefruit contains about 46.

Daidai Its bracing juice is ideal for ponzu, though the entire fruit can also be cooked down to make marmalade. Sudachi This golf-ball-size citrus is popular with grilled fatty seafood, like ...