This coming holiday weekend will see the great seasonal migration begin to decks, balconies and backyards to fire up our gas or charcoal grills. May is not only National Barbecue Month, but also National Hamburger Month. While cooking food outside has occurred throughout history, grilling became a popular recreation in the U.S. in the 1920s. The first charcoal briquets were produced by Henry Ford, using scrap wood left over from making Model T’s. More than a third of U.S. adults enjoy grilling out, and some 12.5 million do so at least twice a week. That may help account for the 58 pounds of beef and 56 pounds of chicken that Americans eat on average each year. Profile America is beginning its 16th year as a public service of the U.S. Census Bureau.