sometimes when i am fermenting my ales, i get a white skim on the top of the beer. it almost resembles a waxy coating. does anyone know what this is and how to prevent it. yes, the airlock is installed properly, and the lid is secure. HELP!!!
i had this happen once and i thought it was an infection. i went ahead and bottled it and found that most bottles had the same film at the bottle neck. two weeks later, it had settled out and the beer tasted great. i don't know what it was, maybe yeast residue of some sort, but it went away and the beer turned out fine.