The taps were flowing steadily at the Montclair Brewery on Thursday night as the after-work crowd filtered in for the weekly open mic night in the parking lot out back. Local comedian Arthur Carlson paced the makeshift stage and managed to squeeze out a few laughs from the 20 customers who were sipping the latest batch of brew whipped up by the owner, Leo Sawadogo. For Sawadogo, Thursday was just another night spent building a business, making beer and harnessing the local talent to get people to come through the door. Judging by the steady line of customers at the taps, the business model was…