I had kimchibok-en-pap (kimchi and fried rice) at Carrefour as a late lunch. You often see these UV Sterlizer cabinets, made of steel and glass, that do the job of drying and sterlizing stainless steel cups after use. Koreans routinely drink water with meals, perhaps because all their food is so spicy. Works for me, though I sometimes order a lemonade or beer inside of water.