I don't have an answer, but I am following this thread. What were your base malts? I have some 50/50 (Pils / wheat) conditioning in bottles now that have a white coating on top. I took as proteins and drank it. No ill effects.
Did you touch any of the white stuff between you finger and thumb? Does it feel greasy?
The recipe was pretty straightforward...it tasted ok and had a slight lemon like taste. The link below has all the pictures and details...I didn't touch it though.
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Recipe:
Size 2.13 gallons: Estimated IBU=16, SRM=4, OG=1.050, FG=1.013, ABV=4.9%
2 pounds Muntons Wheat DME
1/2 pound Golden Blossom Honey
1/4 ounce Halleteur pellet hops boiled for 30 minutes
1/2 ounce Halleteur pellet hops boiled for 12 minutes
1/4 ounce Halleteur pellet hops finishing
11.5 gram Fermentis Safbrew WB-06 yeast
Pitched at 65F and fermented at 65F
Directions:
Boil 2 quarts of filtered water
Boil 1/4 oz. hops for 30 minutes
Boil 1/2 oz. hops for12 minutes
Stir in DME and honey boil for 10 minutes
Place in ice bath until wort temperature cools to 70F
Add 6 quarts cold filtered water to Mr. Beer fermenter
Pour cooled wort into fermenter keg, including 1/4 oz. finishing hops and pitch yeast
Ferment at constant 60F temperature for 21 days