From the lemon-like Japanese yuzu to the small Chinese kumquat ... Right into this discussion comes pomelo, an East and Southeast Asian fruit that is believed to be the ancestor of the grapefruit.
Milder than lemons, and far less bitter than grapefruits, pomelos are sweet and gently tart. You can peel them and eat them out of hand like a navel orange, or use them in all sorts of sweet or savory ...