here's my recipe for hefeweizen. I lived in Germany for a year back in '97-'98 and can tell you this recipe is a good representation of the style.
It's drinkable a week after brewing but is best after 2 or 3 weeks when some of the yeast has fallen out of suspension. You'll need to chill it before serving to get the best results.
Phil's hefe #2
A ProMash Recipe Report
Recipe Specifics
----------------
Batch Size (L): 46.00 Wort Size (L): 46.00
Total Grain (kg): 12.00
Anticipated OG: 1.045 Plato: 11.31
Anticipated SRM: 4.6
Anticipated IBU: 13.3
Brewhouse Efficiency: 55 %
Wort Boil Time: 90 Minutes
Grain/Extract/Sugar
% Amount Name Origin Potential SRM
-----------------------------------------------------------------------------
50.0 6.00 kg. Pale Malt(2-row) Great Britain 1.038 3
50.0 6.00 kg. Wheat Malt Belgium 1.038 2
Potential represented as SG per pound per gallon.
Hops
Amount Name Form Alpha IBU Boil Time
-----------------------------------------------------------------------------
40.00 g. Hersbrucker Whole 4.50 11.7 60 min.
20.00 g. Hersbrucker Whole 4.50 1.6 15 min.
Yeast
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Bruferm Hefeweizen

Enjoy,
/Phil.