# Reheating leftover slices in water: Seongsu pizzeria Pizza Slice Seoul - By Minji Roh (https://superchart.com/en/@yangnim-cafe-ledger/) - Written Sep 18, 2026 - Local places › Restaurants › Seongdong, Seoul - Sponsored: This post was written after visiting with items provided by the business. - English edition: https://superchart.com/en/@yangnim-cafe-ledger/seongsu-pizza-slice-seoul-forest-takeout/ - Also in: [한국어](https://superchart.com/ko/@yangnim-cafe-ledger/seongsu-pizza-slice-seoul-forest-takeout/index.md) ## In short Pizza Slice Seoul is a slice pizzeria on the basement level of Achasan-ro, near Seongsu Station in Seoul. Four slices — Hawaiian, cheese, meatball and pepperoni — were boxed to go for a picnic at Seoul Forest, and the leftovers turned moist again when reheated with a small splash of water. Pizza Slice Seoul is an easy takeout stop before a Seoul Forest picnic. ## Good to know - **Location**: B1, 159 Achasan-ro, Seongdong-gu, Seoul - **How to order**: Pizza can be ordered one slice at a time - **Pizzas available that day**: Meatball, pepperoni, mushroom, Hawaiian and more - **Sides**: Buffalo wings, fries, salad and more - **Takeout**: Available — easy to carry straight to Seoul Forest - **Also worth knowing**: Pizza lettering is possible for anniversaries or events with an advance reservation *as written by the visitor on Sep 18, 2026* ![Main photo of Pizza Slice Seoul in Seongsu](https://img.superchart.com/images/seongsu-pizza-slice-seoul-forest-takeout/seongsu-pizza-slice-seoul-forest-takeout-01-17vow-1200.webp) If you've got Seoul Forest on the itinerary for a Seongsu date, here's a spot that's perfect for takeout! It's the Seongsu pizza restaurant Pizza Slice Seoul. Trendy from the moment you walk in, and easy to grab and go — that made it even better. Apparently if you reserve ahead for anniversaries or events here, they can do lettering on the pizza too, so keep that in mind. So today's plan: pick up 4 kinds of pizza from Seoul Forest favorite Pizza Slice to take with us. ## Where is Pizza Slice Seoul? Basement level on Achasan-ro near Seongsu Station ![Entrance to Pizza Slice Seoul on the basement level](https://img.superchart.com/images/seongsu-pizza-slice-seoul-forest-takeout/seongsu-pizza-slice-seoul-forest-takeout-02-1pxzv-900.webp) Pizza Slice Seoul is on B1 at 159 Achasan-ro, Seongdong-gu. It's underground, so keep your eyes peeled while you're looking for it. ## Inside Pizza Slice Seoul: a basement room with full-height windows and wide table spacing ![The hip interior of Pizza Slice Seoul](https://img.superchart.com/images/seongsu-pizza-slice-seoul-forest-takeout/seongsu-pizza-slice-seoul-forest-takeout-03-1gasa-900.webp) ![Seating inside the shop with generous table spacing](https://img.superchart.com/images/seongsu-pizza-slice-seoul-forest-takeout/seongsu-pizza-slice-seoul-forest-takeout-04-i1ob2-900.webp) ![View of the basement dining area with large windows](https://img.superchart.com/images/seongsu-pizza-slice-seoul-forest-takeout/seongsu-pizza-slice-seoul-forest-takeout-05-1lmsf-900.webp) ![Seating and interior details at Pizza Slice Seoul](https://img.superchart.com/images/seongsu-pizza-slice-seoul-forest-takeout/seongsu-pizza-slice-seoul-forest-takeout-06-1whj4-900.webp) Pizza Slice had exactly that hip pizzeria feel, and since most people seem to grab takeout on their way to Seoul Forest, the shop itself wasn't too crowded, which I loved! Tables are spaced generously and the place is quite roomy, so I'd recommend it for solo diners too. The greenery visible through the floor-to-ceiling windows kept the basement space from feeling cramped at all. ![Open kitchen where pizza is made](https://img.superchart.com/images/seongsu-pizza-slice-seoul-forest-takeout/seongsu-pizza-slice-seoul-forest-takeout-07-w5tpj-900.webp) It's an open kitchen, so you can watch the pizza being made ![Hand-washing sink set up inside the shop](https://img.superchart.com/images/seongsu-pizza-slice-seoul-forest-takeout/seongsu-pizza-slice-seoul-forest-takeout-08-1pjak-900.webp) There's even a sink right inside the store for washing your hands ![Red pepper flakes, Tabasco, and ketchup on the table](https://img.superchart.com/images/seongsu-pizza-slice-seoul-forest-takeout/seongsu-pizza-slice-seoul-forest-takeout-09-1dub2-900.webp) If you're eating in, every table has red pepper flakes, Tabasco hot sauce, and ketchup, so you can season to taste ## Pizza Slice Seoul menu: pizza by the slice, plus sides ![Menu board listing pizzas and sides](https://img.superchart.com/images/seongsu-pizza-slice-seoul-forest-takeout/seongsu-pizza-slice-seoul-forest-takeout-10-ll0or-900.webp) The Pizza Slice menu has plenty of sides too — buffalo wings, fries, salad, and more — check the photo for the full menu! Pizza can be ordered by the single slice, so if you're going with a group you can pick a variety of flavors to share ![Various pizzas displayed by the slice](https://img.superchart.com/images/seongsu-pizza-slice-seoul-forest-takeout/seongsu-pizza-slice-seoul-forest-takeout-11-1uuji-m-900.webp) The day I visited, they had meatball, pepperoni, mushroom, Hawaiian, and several other kinds ![Slice pizzas baked fresh on-site](https://img.superchart.com/images/seongsu-pizza-slice-seoul-forest-takeout/seongsu-pizza-slice-seoul-forest-takeout-12-136g1-900.webp) Since it's baked fresh on-site, the whole shop smells like pizza ## Honest review of four slices: Hawaiian, cheese, meatball and pepperoni ![Four slices of pizza boxed up to take to Seoul Forest](https://img.superchart.com/images/seongsu-pizza-slice-seoul-forest-takeout/seongsu-pizza-slice-seoul-forest-takeout-13-qcnrh-900.webp) Boxed up four slices and headed off to Seoul Forest ![A single slice roughly the size of a face](https://img.superchart.com/images/seongsu-pizza-slice-seoul-forest-takeout/seongsu-pizza-slice-seoul-forest-takeout-14-iza2x-900.webp) Each slice is basically the size of my face lol ![Hawaiian slice topped with pineapple](https://img.superchart.com/images/seongsu-pizza-slice-seoul-forest-takeout/seongsu-pizza-slice-seoul-forest-takeout-15-weim4-900.webp) ### Hawaiian slice I'm a pretty picky eater, but Hawaiian pizza is oddly one of my genuine favorites, so Pizza Slice's Hawaiian pizza was really my kind of thing. The sweetness of the grilled pineapple went so well with the tomato sauce and toppings ![Cheese slice piled high with cheese](https://img.superchart.com/images/seongsu-pizza-slice-seoul-forest-takeout/seongsu-pizza-slice-seoul-forest-takeout-16-h8xvv-900.webp) ### Cheese slice Cheese pizza — need I say more. It's the kind of pizza that's good anywhere, but this one really uses good cheese, so it was nutty and salty and delicious. When I reheated the leftovers at home, they got a bit crispy and were even better ![Meatball slice topped with large meatballs](https://img.superchart.com/images/seongsu-pizza-slice-seoul-forest-takeout/seongsu-pizza-slice-seoul-forest-takeout-17-5kd6o-900.webp) ### Meatball slice Third up was the meatball pizza! It was loaded with big meatballs, so the texture was great — kind of like a bulgogi pizza vibe. If you like bulgogi pizza, this one's a guaranteed hit ![Thin-crust pepperoni slice packed with pepperoni](https://img.superchart.com/images/seongsu-pizza-slice-seoul-forest-takeout/seongsu-pizza-slice-seoul-forest-takeout-18-1hno7-900.webp) ### Pepperoni slice Last up, pepperoni pizza! This is the one that's hard to find someone who doesn't like it. The crust itself is thin, so two of us actually polished off all four slices without even trying. The salty, slightly spicy pepperoni packed in there made for such great flavor ## How to reheat leftover pizza slices with a splash of water ![Reheating leftover pizza slices with a splash of water](https://img.superchart.com/images/seongsu-pizza-slice-seoul-forest-takeout/seongsu-pizza-slice-seoul-forest-takeout-19-1uw1l-900.webp) ✨ How to reheat Seongsu pizza favorite Pizza Slice ✨ Splash a little water on it before microwaving and it comes back moist and delicious! ## Final verdict: takeout from Pizza Slice Seoul before a Seoul Forest picnic If you found this blog searching for Seoul pizza spots, Seoul Forest favorites, or a Seongsu date idea, you're a lucky one. What's really great about Pizza Slice is that takeout is totally doable — you can grab your order and head straight to Seoul Forest! My friend also picked up takeout here last time for a Seongsu date course, and highly recommends it ✨ If you're looking for a Seongsu pizza spot near Seoul Forest that does great takeout, give Pizza Slice a try 🫶 ## Where it is - Pizza Slice Seoul (피자 슬라이스 서울) - B1, 159 Achasan-ro, Seongdong-gu, Seoul, South Korea - 서울특별시 성동구 아차산로 159 지하1층 - 37.5430948, 127.0616748 - Google Maps: https://www.google.com/maps/search/%ED%94%BC%EC%9E%90%20%EC%8A%AC%EB%9D%BC%EC%9D%B4%EC%8A%A4%20%EC%84%9C%EC%9A%B8/@37.5430948,127.0616748,17z --- Superchart · https://superchart.com/en/@yangnim-cafe-ledger/seongsu-pizza-slice-seoul-forest-takeout/ · https://superchart.com/llms.txt