I’d like to try a pummelo. Largest fruit, sweeter than a grapefruit. If I lived in NYC or San Fran I’d try to find one in Chinatown.
Wal Mart has them in the Fall. I get one every year and really enjoy it. I'm on low carb, so there isn't much sweet fruit in my diet, but pummelos are great. I do eat a lot of botanical fruits like cucumber, tomatoes and peppers though.