The pomelo (or Chinese grapefruit, pummelo, pommelo, jabong, boongon, shaddock, Jeruk Bali or suha), Citrus maxima (Merr., Burm. f.), also Citrus grandis (L.), is a citrus fruit, usually a pale green to yellow when ripe, larger than a grapefruit, with sweet flesh and thick spongy rind.
Pomelos or trai buoi are everywhere in Vietnam; I’m currently in Da Nang and they are just as ubiquitous as they were down south in Saigon. The fruit’s pith is extremely bitter and thick, but the flesh tastes like a cross between a grapefruit, lemon, and orange. Although it’s difficult to tell from the picture, Pomelos are extremely large. They can grow to be 30 centimeters in diameter and weighing as much as 10 kilograms. A single pormelo costs approximately 6,000 VND. The pomelo is native to South East Asia, but is also grown in California and Florida.