Eel restaurant in Oido that won over a non-eel eater: Sanhaejinmi

In short

Sanhaejinmi is a newly opened all-you-can-eat eel restaurant in Oido, Siheung, Gyeonggi, serving domestic Japonica eel with unlimited giant scallops and naengsam (thin-sliced frozen pork belly) in the 40,000-won range per person. The writer, who thought eel wasn't to their taste, fell for Sanhaejinmi's thick pre-grilled eel, ordered two more eel refills, and also enjoyed the scallops, naengsam and self-bar ramyeon. Sanhaejinmi is an easy eel restaurant to recommend in Oido, even for first-timers hesitant about eel.

Sanhaejinmi, all-you-can-eat eel restaurant in Oido, main photo

Good to know

Opening hours
Mon, Wed, Thu 16:00–23:00; Fri 16:00–24:00; Sat 12:00–24:00; Sun 12:00–22:00
Closed
Tuesdays
Price
₩40,000s per person (as stated by the writer)
All-you-can-eat menu
Domestic Japonica eel, giant scallops, naengsam (thin-sliced frozen pork belly)
Self-serve bar
Side dishes, naengsam, ramyeon (Jin Ramen Spicy, Yeul Ramen, Buldak Bokkeum Myeon), Hetbahn instant rice
Parking
Little space in front of the restaurant; use the public car park (no parking validation)
Restrooms
Men's on the 1st floor; women's on the 2nd floor behind the counter
Other
Private hire available, corkage available (paid), elevator
Complimentary
Corn cheese, served once
Address
2F, 219 Oido-ro, Siheung, Gyeonggi
Price reference
₩40,000 ≈ $30 (2026-10-17)

as written by the visitor on Jun 30, 2026

What is Sanhaejinmi in Oido like?

Sanhaejinmi, all-you-can-eat eel restaurant in Oido, main photo

Sanhaejinmi (산해진미) is the first all-you-can-eat eel place in Oido using 100% domestic Japonica eel! Besides eel, you can also eat giant scallops and naengsam (thin-sliced cold pork belly for grilling) in unlimited amounts. This weekend I visited Sanhaejinmi, which just opened in Oido ෆ

Inside Sanhaejinmi in Oido

Sanhaejinmi layout and toilet location

The 1st floor of Sanhaejinmi only has a reception area and the men's toilet. The restaurant itself is up on the 2nd floor.

Reception area on the 1st floor of Sanhaejinmi's standalone building

A whole standalone building..👍🏻 Take the elevator up to the 2nd floor.

Interior of Sanhaejinmi's 2nd floor
Sanhaejinmi table with sauces and tissues on top

Isn't the place super clean? Sanhaejinmi officially opened on June 18, so it's only been open a little over 10 days! They also keep the sauces, tissues and other essentials up on the table like this, which left the tables relatively roomy. I liked that 🤍

View of Sanhaejinmi's 2nd-floor interior

The women's toilet is on the 2nd floor, behind the counter.

What are the self-bar and tables like at Sanhaejinmi?

Side dishes and ramyeon at the Sanhaejinmi self-bar

At the Sanhaejinmi self-bar you can help yourself to extra side dishes, naengsam, ramyeon (Jin Ramen Spicy, Yeul Ramen, Buldak stir-fried noodles) and packaged cooked rice. Just microwave the rice. Having Buldak noodles is real thoughtfulness..👍🏻

Induction and gas burners on a Sanhaejinmi table

Each table has one induction burner and one gas burner. Only induction-compatible grill plates can go on the induction burner. Corn cheese is served once as standard!

Basic table setting and corn cheese at Sanhaejinmi
Sanhaejinmi's 3-tier tower with eel and scallops

What comes on the 3-tier tower at Sanhaejinmi?

At Sanhaejinmi we got a 3-tier tower holding naengsam, scallops, clams, abalone and eel. The joy of enjoying all this for the ₩40,000s per person..🍀

Honestly, I've wanted to try eel but was scared of failing at an eel restaurant, so I never went. But Sanhaejinmi also has scallops and naengsam besides eel, so no need to think twice. GO!

Pre-grilled eel cooking on the grill plate

Is Sanhaejinmi's eel tasty even if you don't normally eat eel?

The eel at Sanhaejinmi comes pre-grilled, so it finishes cooking quickly! My nervous first bite of eel..🤍

My partner loves eel, but because of me we can't go to grilled eel places, so we go to places that sell eel rice bowls or eel sushi, and I once tried a bite of my partner's eel. It wasn't my style, so I thought, 'There's no eel in my life'..! But whoa. The eel was sooo good. Eel + eel sauce + ginger is a total winning combo.

A piece of eel with eel sauce and ginger

The cheese scallops use giant scallops, not small red scallops, so they're really big!

After scallops, naengsam this time! I grilled the green onion kimchi and cabbage kimchi served alongside and took a bite..🤍

Naengsam grilling with green onion kimchi
A bite of naengsam grilled with kimchi

Order eel refills in advance

The eel at Sanhaejinmi was so good that I got a first refill. Since the eel comes pre-grilled, you need to order ahead! My partner said it was the first time seeing eel this thick at an all-you-can-eat place. I meant to stuff myself with scallops today but fell for the eel and ate loads of it..🤍

Refilled thick grilled eel

How big are the giant scallops at Sanhaejinmi?

The scallops at Sanhaejinmi are really good too! Topped with the corn cheese served as standard!

Giant scallops grilling with corn cheese on top
Sanhaejinmi's grilled cheese giant scallops

Giant scallops, confirmed.👍🏻 The meat is about the size of a soju glass.

Scallop meat the size of a soju glass

They refilled the scallops too. You get 6 at a time.

Refill of giant scallops, six at a time

Where do you cook the dessert ramyeon?

Of course we have to eat ramyeon for dessert🍜

Self-bar ramyeon cooked as dessert
Ramyeon pot boiling on the gas burner

The ramyeon pot at Sanhaejinmi isn't induction-compatible, so don't boil it on the induction burner!❌ We boiled it on the gas burner and then moved it, haha. The table behind me cooked their ramyeon on the naengsam grill plate. Clever folks👍🏻

Eel refilled one last time
Grilled eel refilled as a half portion
Finished eel spread at Sanhaejinmi

Is Sanhaejinmi in Oido worth going back to?

Last, another eel refill lol. A whole one was too much, so I asked for just half. Sanhaejinmi is new so the place is super clean, and I was surprised by the food quality. The eel especially is the best..I'm smitten..

The view is great too. Recommending Sanhaejinmi, an Oido eel spot!✨

Where it is

Sanhaejinmi산해진미

219 Oido-ro, Siheung, Gyeonggi, South Korea (2nd floor)경기도 시흥시 오이도로 219 2층

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