Plum wine with herby hints.If you like your wine to have a little extra character, try Choya's plum wine with extra shiso. This plum wine, or ‘umeshu’ as it is known in Japanese, is made by taking whole ume plums, soaking them in alcohol and sugar, filtering the liquid out and adding a handful of the same ume plums used during the stewing process for an extra strong plum flavour. Extract from shiso, or perilla leaves, has then been added.