The ugli fruit is a Jamaican citrus hybrid — a tangelo crossing mandarin with grapefruit (and some pomelo) — wrapped in a loose, knobbly, green-and-orange rind that peels away easily to reveal sweet-tart, juicy, nearly seedless flesh. "Ugli" is a trademark, a play on its homely looks; the fruit inside is prized for tasting milder and sweeter than the grapefruit it resembles.