A beer and a shot – as refreshment goes it doesn’t get much simpler than that. But on laid-back summer evenings the to-and-fro between hard liquor and ice-cold beer is often what I crave. In Germany they call it a herrengedeck. In Scotland they call it a “hauf and a hauf” (half and a half). In Korea, they drop their shot of soju actually into their lager to make a somaek, or the Korean answer to a Depth Charge.