Some parts of Korean life feel so natural to me that I never thought of them as particularly Korean until I began talking with people from other countries. Sitting on the floor even when there is a sofa nearby, carrying an iced Americano through freezing winter weather, or leaving home without thinking about a house key are all things I have seen so often that they barely register as unusual.
These habits did not appear for one single reason. Housing traditions, climate, technology, convenience, and personal preference all play a part, and the interesting part for me is how easily older habits and newer systems can exist side by side.
Why Sit on the Floor When There Is a Sofa?
Modern Korean apartments usually have sofas, dining tables, beds, and chairs, but that does not mean the floor has stopped being part of the living space. People may sit on the floor to watch television, eat fruit, fold laundry, talk with family, or simply lean against the sofa instead of sitting on it.
Taking shoes off indoors makes the floor feel much more usable than it might in a home where outdoor shoes are worn inside. The history of ondol, Korea’s traditional underfloor heating system, also helped shape a way of living in which people sat, ate, and slept close to the warm floor.
That tradition did not disappear with modern apartments. Today’s homes use modern heating systems, but the habit of treating the floor as part of the living space remains familiar, something I explore in more detail in my guide to Korean ondol culture.
I grew up seeing people sit and lie on floors as naturally as they used chairs. Even now, someone may sit on the floor with the sofa behind them and use it more like a backrest than a seat. That is one of those small habits I never thought worth explaining until I realized how different it can look to someone seeing a Korean home for the first time.
Why Do Koreans Drink Iced Americano in Winter?
Another habit that often surprises visitors is seeing people carry iced coffee in the middle of winter. The Korean expression eoljuk-a (얼죽아) is short for a phrase meaning roughly, “Even if I freeze to death, I’ll drink iced Americano,” and it has become a familiar way to describe people who choose iced coffee regardless of the temperature.
There is no single reason people do this. Some prefer the taste, some like drinking iced coffee slowly, and others simply order the same drink all year because that is what they enjoy. What stands out is that ordering an iced Americano on a freezing day is not considered strange in Korea, and the expression itself is familiar enough that the Ministry of Culture, Sports and Tourism has used eoljuk-a when introducing Korean coffee culture.
Coffee habits in Korea have changed a great deal over the decades. Instant coffee mix was once much more central to everyday coffee culture, and I look at that history separately in my guide to Korean coffee mix culture.
The winter image is still one I notice every year: someone zipped into a thick padded coat, shoulders raised against the cold, holding a clear cup packed with ice. The contrast looks funny when you stop to think about it, but on a Korean street it barely attracts attention.
Why Many Koreans Do Not Carry House Keys
When I leave home, I may check whether I have my phone or wallet, but thinking about a house key is not normally part of my routine. Digital door locks have been common in Korean apartments and houses for so long that entering a code, using a card, or unlocking the door electronically feels more natural than carrying a metal key.
That small convenience changes behavior very quickly. Once you are used to leaving home without a key, it becomes one less object to remember, lose, or search for in a bag. To me, digital locks are another example of how quickly a useful convenience can disappear into the background of daily life once people become accustomed to it, something I also discuss in my article on Korea’s ppalli-ppalli culture and everyday efficiency.
The interesting part is that keyless homes have not made physical keys disappear from every part of Korean life. You can leave an apartment using a digital lock and later encounter one of the most old-fashioned-looking keys imaginable in a café or restaurant.
Bathroom Passwords and Giant Keys
In many cafés or small restaurants, the restroom is not located inside the business itself. It may be down a hallway or elsewhere in the building, and customers sometimes need a door code or a key to use it.
If there is a keypad, the password may be printed on the receipt, written near the counter, or given by a staff member. Then you walk down the hallway repeating the number in your head so you do not forget it before reaching the door.
Other places still use a physical restroom key, and the key may be attached to an oversized object so customers do not accidentally put it in a pocket and leave with it. I have seen keys attached to large plastic pieces and even objects as unexpected as a rice paddle.
So you can leave a modern apartment without carrying a house key and later that same day walk through a restaurant hallway holding a huge object with a restroom key attached to it. The two systems look completely different, but both survive because they work for the place where they are used.
I grew up with all of these things, so I never thought of them as cultural details worth explaining. It was only when I began looking at Korea from the perspective of someone visiting for the first time that I realized how much small habits can reveal about the way people live.
A warm floor can keep an old way of relaxing alive inside a modern apartment, while digital locks can make a house key feel unnecessary. And in the middle of winter, someone in a padded coat will probably still walk past holding an iced Americano.
About the Author 🇰🇷
I live in South Korea and write about the small details of Korean life and culture that I experience and observe firsthand.
English is my second language, so I sometimes use tools such as Gemini and Google Translate to help with translation and editing. The experiences, observations, opinions, and cultural perspectives in my articles are my own, and I personally review and edit every article before publishing it.
My goal with Korea Core Info is simple: to share everyday Korea from a local perspective and help international readers discover things they might not always find in a typical travel guide.
I hope my stories and guides help you understand Korea a little better — not just as a place to visit, but as a place where people live their everyday lives.