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
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 bucket. Waited 7 more days and removed watermelon then put in secondary for 2 weeks. At kegging I put in 1/2 an ounce of watermelon flavoring because I couldn't really taste the melon. Wow! after it was carbed the watermelon flavor was so good. The more it sat the better it got. My brew club loved it! Going to brew it again next weekend. Make sure you wash the outside of the melons with soap and water and sanitize melons, freezer bags, scoop, knife and counter