To be a treasure hunter in the 21st century requires four things: a hire car, a return ticket from China, a bit of chutzpah and a map of the dustiest, least successful liquor stores in rural Japan.
Armed with these — and with a certain level of initial capital — there is profit to be made arbitraging imbalances in the premium whisky market and the worldwide shortages of the really good Japanese stuff.
For those without the energy or the expertise for the small-town whisky wheeze, there are lesser gains to be made back in central Tokyo, buying Shiseido’s Anessa sunscreen, Issey Miyake Bao Bao bags and Calbee Frugra fruit granola cereal for a quick, marked-up sale in Shanghai.