Hot sauce, hot stock: can Buffalo Wild Wings stay on fire?

Russell Akred brought the heat to the grand opening of Buffalo Wild Wings' new prototype restaurant. Akred ate 12 Blazin Hot Wings in two minutes to win the Blazin Challenge, Dec. 17,2012, In Cincinnati.(Photo by Tony Tribble/Invision for Buffalo Wild WIngs /AP Images) · The Exchange · Tony Tribble

Buffalo Wild Wings (BWLD) made a shrewd decision this year, one that will be critical in determining how successful the chicken seller will be in the months and years to come.

Instead of plying guests with 12 wings counted out, the Minneapolis-based restaurant operator now serves up fare based on weight. That means you don't go in and order a dozen wings today. Instead, if you want around that amount, you'd order a small, translating to "at least 10," or a medium, totaling "at least 15."

The reason is simple. Buffalo Wild Wings buys its chicken by the pound. Previously, it was selling that chicken based on the number of wings diners wanted. Yet wings, the company says, are growing larger as modern farming techniques are producing bigger chickens. This means customers were getting more meat per order than they had in the past. As CEO Sally Smith said on CNBC: "We had a yield problem."

Enter sale-by-weight. No, you don't order a pound of wings at the store, but what's happened is the company is better matching the price it charges you with the price it pays for its chicken. Although that might mean you get fewer wings counted out, in the company's view, there's as much meat in the current five as in yesterday's six.

The shift, still in its infancy, might be what keeps Buffalo Wild Wings' red-hot stock heading higher. This year it's bolted 95.5%, nearly four times the S&P 500's gain. Combine chicken, beer and sports, and you may be on to something, in other words. While there's reason to believe that, at least for a few months, shares will continue climbing, the risks to that thesis aren't remotely trivial.

Hotter the better?

Wings are serious business in America. McDonald's (MCD) got in the game with a recent Mighty Wings promotion, and chains such as Wingstop and Wing Zone are taking their chicken global. Buffalo Wild Wings is also eyeing an international expansion; the company already has a handful of stores in Canada.

Analysts expect the company to have sales of $1.27 billion this fiscal year, up 22% from last year to an all-time high. Expansion has been rapid, considering that, in 2007, revenue was only $329.7 million. These days, it's nearing its 1,000th location.

We do love chicken. The National Chicken Council, citing Agriculture Department data, says the average American consumed 33.7 lbs. of chicken in 1965. For 2014, the estimate is that it will reach 85 lbs. worth. Wings were 39% of last year's store revenue for Buffalo Wild Wings, while alcohol was responsible for around 22% -- it's effectively a sports bar.