For the 10th anniversary of the Extreme Beer Fest in Boston, Mass., we're doing something really extreme: adhering to the Reinheitsgebot, the German Purity Law of 1516 that we've been thumbing our noses at for more than 15 years.

We're looking for creative ideas and mom-and-pop sources of barley, hops and yeast. That's where you come in. We've sourced a few ingredients, but we're looking for suggestions to round out the recipe.

We'll pick six winners, and each one will get one ticket to the EBF, an EBF T-shirt and a Dogfish Head wool hat. The contest starts now and ends Tuesday, Oct. 30.

Get the details here!