How to Make Wheat Ale a tad bit sweet?

I just got through bottling a wheat ale with 5 cups of watermelon added to the secondary. Upon tasting when getting the FG, the beer was good but something was missing. After I added the dextrose for bottling, BINGO! The small spike of sweetness made the beer. I assume this will ferment out to give me carbonation.

In the future, how would I add that extra sweetness?

 

Here is my recipe (built from others, of course)


5.50 lb Wheat LME Extract 0.50 lb Aromatic Malt , Belgium Grain
0.50 lb Cara-Pils/Dextrine Grain
1.00 lb Honey
0.50 oz Perle [6.6 %] (60 min) Hops
0.25 oz Perle [6.6 %] (15 min) Hops
0.25 oz Perle [6.6 %] ( 5 min) Hops

5 cups of watermelon juice
Whitelabs American Hefeweizen (wlp320)
bru vigor

- OG: 1.054
- Before adding juice to secondary: 1.0165
- FG: 1.011

ABV: 6% (by standard measurement), 7.5% (guessing)

 

ferment warmer, mash at a higher temp, use less water in your mash, use liquid yeast meant for wheats (i.e., Wyeast 3068).

American wheats use late hop additions. You might want to skip those additions and just add the bittering hops at the 60min mark, which puts you in the Bavarian wheat camp.