[quote:3dg2rxvm]I'm going to put 5L of wort out in my garden some night and see what happens.[/quote:3dg2rxvm]
I did it the night before the snow fell this year. Started fermenting after 2 days and finished in 2 weeks. Funny funky aroma; didn't go sour, though.
Need to rack it for secondary now and properly try it.