The Huxtaburger Book examines the precise elements that make up the ultimate burger: the perfect squishy bun; a pickle that has just the right level of crunch; the exact quantity of mayo and ketchup to deliver maximum flavour; and the ultimate wagyu beef pattie that's meaty, juicy and umandi-intense. Featuring the sought-after recipes from the menu of cult burger joint, Huxtaburger, as well as…