I did not think I had much to learn about fondue until I spoke to Joe Salonia, a FonDuel champion. This friendly annual competition among people in the cheese business—mostly retailers and distributors—is the Olympics of melted cheese, with the public invited to taste and judge the entries. FonDuel took a pandemic pause last year, but Salonia has earned first and second place finishes in the past. (The latter result, he assures me, was “very close.”) With Valentine’s Day looming, it seemed like a good time to get some tips from a master on a dish that’s meant to be shared.