Brewhouse yeast strain

[Roger]

So I brewed a kolsch on Monday and I left a sample of wort on the counter in my brwery and today there's a white layer forming on top. I got to thinking it might be interesting to brew with it. What do you guys think?

[jamie_savoie]

I say yes if you're new thing is bad beer 

[robcoombs]

You could always try a 1gal batch to see how it goes. Chances are there is brett but also a number of other bugs that are going to cause issues. At least if you try a small batch, if it doesn't go well you don't feel bad dumping it and if it turns out ok you can harvest afterwards.