Spence and Jimmy at a barbeque organized by Pat O'Brien sometime around 1937. They were all members of what they called "The Irishman's Club" or more simply, at times, just "The Boy's Club." Cagney's looking at Tracy like he's in a competition to out-eat him or at least, eat more menacingly. And I gotta say, I love the white shoes and white socks sported by Cagney. It's a statement, a white heat kind of a statement.
Oh yeah, and I'm pretty sure the mugs contain milk. Or maybe apple juice. Yeah, probably apple juice.