sorghum

Sometimes it is possible to find sorghum or millet but on the day of filming, the kitchen manager says: "There is no flour or bread."

In place of fermented grapes stood yellow rice wine, incendiary sorghum liquor and, if the night was long enough, out came a bottle of the latter infused with snake bile, promising virility.

But don’t overlook honey, agave, white sugar, maple syrup or even sorghum if you want something with a bit more edge.

Beijing doesn't seem too worried about looking elsewhere for more chicken, pork and sorghum and – at the same time – it knows it is whacking the US president right in his heartland.

In the past, he has given equipment, from boats to a machine used to grind sorghum - a staple grain in Africa and Asia.