SEOUL, South Korea — In many parts of the world, convenience stores are the shops of last resort: cigarettes, sodas and laundry detergent. But in South Korea, you might find single malt whiskies, $800 French wines, 24K gold bars, shampoo and conditioner refill stations, televisions or a dine-in instant noodle bar with more than 200 varieties of ramyon.

A customer might be able to pick up a package, wash and dry their clothes, or sign up for a new debit card.

The stores are best known for their numerous feats of "instant-izing" food, a process in which nearly every conceivable dish is turned into a packaged meal: spaghetti, Japanese udon, fried rice that you squeeze out of a tube. These have turned convenience stores into a $25 billion industry in South Korea and those food products are c

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