This milkshake recipe – a slender, stripy offering originally featured in Wallpaper* magazine’s March/April 1998 issue – was inspired by classic American diner fare. Entertaining Director Melina Keays ...

“A chocolate milkshake? You want one? On it, sir!” Biden, joined by adviser Amos Hochstein, proceeds to walk around the executive grounds with a chocolate syrup-lined ice-cream-sundae glass.

A deliciously indulgent banana milkshake, topped with a swirl of vanilla-flavoured whipped cream and grated chocolate ... with the vanilla paste and maple syrup until it holds firm peaks.