Red Collar Brewing – Grumpy Monk By adminJanuary 18, 2019New Arrivals Why is the Grumpy Monk so grumpy? Well it’s nun of your business. New from Red Collar Brewing, a dark sour made from the lower gravity batches of the Black Dog Quad. With added lacto and hops to punch this up to a medium bodied sour ale. Cheers!