Time Out says
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During a warmer season, the wide open rooftop terrace of Café Onion is popular spot for the trendy Seoulites enjoying coffee and the wind blowing through the area. It isn’t much of a view, actually, as the rooftop is located only on the second floor of the building. Still, it’s enough to watch the scenes filled with surrounding factories and people walking by, while listening to the not-so-distant, strangely calming tunes of that trains passing by.
The building in which the café's located has a long history of its own; built in 1970's, it was previously a supermarket, a restaurant, a repair shop and most recently, a metal factory. While the whole space has indeed been restored with ultra-modern features like wide windows, minimalistic furniture, and a well-curated garden, the café's wide-open interior retains all of its old, rustic and broken-down elements. Just like any trending spot in Seoul, Onion is often seen on the social media and usually busy with young crowds. But because it's got so much space and many available seatings, you won’t have to worry about waiting to get a table (even if you do end up waiting a little, there's a bit of atmosphere you can enjoy in the meanwhile).
Their most popular drink is the Flat White. It might not be as strong as you'd expect, but it's certainly smooth. There are also good pastries, which are all made in-house, at the newer branch of Bread 05 located on the second floor (many of those who stop by the café are only here to pick up the bread). The sugar-coated Pan d’Or 5.0, along with the ciabatta with butter and red beans, is really popular and often sold out by the early afternoon (the café opens at 8amon weekdays, and at 10am on weekends).
As one of the good examples of the "industrial cafés" in Seongsu-dong, some might wonder if Onion's "15 minutes of fame" will soon be over. But only a few months after its opening, this spacious and chill spot seems to be becoming a beloved landmark of the area already.
8, Achasan-ro 9-gil
|Transport:||Seongsu Sation (line 2) exit 2. 2 mins walk.|
|Price:||Flat White 5000 won, Carrot Juice 5500 won, Red bean butter bread 4000 won, Pain d'or 5000 won|
|Opening hours:||Mon-Fri 08:00-22:00, Sat-Sun 10:00-22:00|