My first SMaSH beer was going to be an English Mild Ale, Marris Otter and a mystery hop. I brewed it about 10 weeks ago and I didn't much like the flavor of it after fermentation so I was lazy and let it sit without dumping it. I tried it today and it is definately sour. It doesn't have any strange odor but definately tastes like a sour beer. It has been in a glass carboy the whole time with carboy cap and airlock. Any speculation on what happened? I should add that the hops I used were harvested by myself from a fellow brewer's hop garden and properly dried in a food dehydrator. Wild bacteria maybe? I'm certainly not planning on drinking it for fear of getting sick.