I brewed a watermelon wheat and it was delicious!
5 gallon batch
6lbs Bavarian Wheat DME
1oz Hallatauer at 60 min
1oz Hallertauer at 5 min
US-05 rehydrated
After 7 days in primary I put in 9lbs of yellow watermelon yes YELLOW (that had been frozen and thawed) right on top in primary...