Makes 1 serving
Pour milk into a tall soda glass. Add seltzer to milk while stirring vigorously with a long spoon. The head should rise just to the top of the glass. Drizzle in syrup, stirring with small wrist motions to leave the head undisturbed. The resulting drink should have a dark brown bottom and a pure white foam, about one inch high, on top.
Adam Rapoport, editor in chief of Bon Appetit magazine and the website www.bonappetit.com, knows his way around a grill. He has edited an entire book on the subject: The Grilling Book: The Definitive Guide from Bon Appetit.