 At the time, there were more than 850 Boston Market outlets, which specialized in home-style meals, with rotisserie chicken the lead menu item.Revenue at Boston Market during 1999 totaled $670 million.McDonald's rounded out its acquisition spree in early 2001 by buying a 33 percent stake in Pret A Manger, an upscale urban-based chain specializing in ready-to-eat sandwiches made on the premises.