The Langham, Custom House, Bangkok has named the food and beverage roster for its December 2024 opening on the Chao Phraya River: Chef Ton Tassanakajohn at Roi Chak Sam, Garima Arora at The Cotton Room, Ricky Lin Quoping at T’ang Court and Tom Hearn at Crowntail. Put Langham Custom House Bangkok on your short list if you plan Bangkok around meals, because the opening puts Le Du’s Asia’s 50 Best Restaurants 2023 No. 1 chef, the chef-owner of two-MICHELIN-starred Gaa, and a chef from the three-MICHELIN-starred T’ang Court in Hong Kong inside one restored 1888 complex.
The Langham Custom House Bangkok culinary team is the reason to track it
The credential stack is unusually direct. Thitid ‘Ton’ Tassanakajohn leads Roi Chak Sam, and his Le Du was named No. 1 on Asia’s 50 Best Restaurants 2023. Garima Arora, chef-owner of two-MICHELIN-starred Gaa in Bangkok, shapes The Cotton Room ’s Indian-led lunch and dinner concept. Ricky Lin Quoping takes T’ang Court after time at the three-MICHELIN-starred original at The Langham, Hong Kong. Tom Hearn runs Crowntail after roles at Vesper Bangkok, KOL Mezcaleria and The American Bar at The Savoy in London (Breakingtravelnews1).
That makes the property a smarter track than a normal hotel opening if you are deciding where to spend a night in Bangkok. If you already have Le Du or Gaa on a trip plan, Langham Custom House Bangkok is not a replacement. It is a way to add a second Ton or Arora-adjacent meal without booking the original restaurant, assuming the opening menus deliver on the names attached. If you have one serious dinner slot, Roi Chak Sam is the one to watch first. If you need breakfast, afternoon tea or a business lunch that still has chef credibility, The Cotton Room is the easier play.
Custom House gives the programme a useful Bangkok address rather than just a hotel dining floor. The building was established in 1888 and once served as Thailand’s gateway to the world, Langham Hospitality Group CEO Bob van den Oord has said. That history matters only because the restaurants use it in concrete ways: Roi Chak Sam’s name refers to the three per cent import duty once collected there, and The Cotton Room ties itself to the cotton trade that passed through Bangkok’s ports (Breakingtravelnews1).
Chef Ton makes Roi Chak Sam the first table to watch
Roi Chak Sam is the booking to chase first if you care about Thai fine dining. Chef Ton’s Le Du ranking, No. 1 on Asia’s 50 Best Restaurants 2023, gives the restaurant the cleanest international signal in the hotel. Roi Chak Sam will serve contemporary Thai cuisine from the second floor of the Northern Heritage Building, once home to Thailand’s Import & Export Department.
The format sounds more historically specific than a generic hotel Thai restaurant. The restaurant takes inspiration from the Glorious Era of Siam and royal banquet menus served during the reign of King Rama V. The menu is described around seasonal produce, local ingredients and contemporary technique. There are no published prices, tasting-menu length or reservation-release mechanics in the announcement, so do not build a tight itinerary around a confirmed booking window yet. Track it, then move quickly once reservations open.
The name is useful shorthand for the whole concept. Roi Chak Sam means ‘three from a hundred’, a reference to the three per cent import duty once collected at Custom House. That is the kind of detail that separates this from the usual luxury-hotel Thai dining room, where the story often stops at silk, teak and river views. Here, the building’s former tax function gives the restaurant a specific frame (Breakingtravelnews1).
For decision purposes, Roi Chak Sam is better than The Cotton Room for a dinner-led trip and better than T’ang Court if you want the meal to feel pinned to Bangkok. T’ang Court brings Hong Kong Cantonese lineage; Roi Chak Sam is the local anchor. If you are in Bangkok for two nights and already have one independent restaurant booked, this is the hotel table most likely to justify staying on property for the second dinner.
Garima Arora gives The Cotton Room a day-to-night case
The Cotton Room is the practical venue in the lineup, and that is not a downgrade. It sits on the ground floor of Custom House and wraps around the Arrival Hall, Butler Salon and Grand Staircase. It moves from à la carte breakfast over the river to The Langham’s signature Afternoon Tea, then to an Indian-led lunch and dinner concept shaped by Garima Arora.
Arora’s role changes how you should read The Cotton Room. Without her, this would sound like a handsome all-day hotel room with tea service. With the chef-owner of two-MICHELIN-starred Gaa attached, it becomes the venue to use when you need flexibility but do not want to default to a safe hotel meal. Her concept is rooted in Indian culinary heritage and uses Thai ingredients within a Bangkok setting. Anyone promising a specific menu is guessing.
The risk is clarity. All-day venues can become too many things at once: breakfast room, tea room, lunch venue, dinner room. The Cotton Room has three distinct expressions by design, which helps, but the booking decision should depend on timing. Go for breakfast if you are staying in-house, tea if you care about Langham ritual and pastry, lunch or dinner if Arora’s Indian concept is the point. Do not treat those as the same reservation.
T’ang Court and Crowntail add the group-dining and bar plays
T’ang Court is the safer power-dining bet. Ricky Lin Quoping leads the Bangkok restaurant after time at the three-MICHELIN-starred original T’ang Court at The Langham, Hong Kong, and the Bangkok version extends that Cantonese line into the Southern Heritage Building, formerly the Second Post & Telegraph Building. If Roi Chak Sam is the Bangkok-specific table, T’ang Court is the private-room table.
The menu direction is specific enough to make the use case clear: Cantonese barbecue specialities, handcrafted dim sum, premium seafood and wok-fired dishes. Three private dining rooms on the second floor can host smaller gatherings or combine for larger occasions. That makes T’ang Court better than Roi Chak Sam for a family meal, a business dinner or a celebratory table where privacy matters more than tasting-menu energy.
Its comparison set is not Le Du or Gaa. T’ang Court competes with the Cantonese rooms attached to luxury hotels across Asia, where consistency, pacing and private dining matter as much as the chef’s signature. The three-MICHELIN-star Hong Kong connection gives Bangkok diners a clear reason to test it early, but the better question is group size. If you are two people with one dinner, Roi Chak Sam is the more Bangkok answer. If you are six to twelve and need a room, T’ang Court probably makes more sense.
Crowntail gives the property its late-night lever. The bar spans an indoor bar, Riverside Pavilion, rooftop Two Spot bar, outdoor terrace and private pier, so it is not just a counter attached to the lobby. Tom Hearn brings a CV that moves between Bangkok and London: Vesper Bangkok, KOL Mezcaleria and The American Bar at The Savoy. The bar takes its name from Thailand’s Crowntail Betta, the fish known for crown-like fins and vivid colour (Breakingtravelnews1).
For travelers, Crowntail is the low-commitment way into Langham Custom House Bangkok before you gamble on dinner. Start with a drink if you cannot get the restaurant reservation you want, or use it after T’ang Court when the group wants to keep the night on the river. The multi-zone setup also matters for timing: indoor bar for a proper cocktail, Riverside Pavilion or terrace for a view, rooftop Two Spot bar when the weather cooperates, private pier for arrivals that need some theatre without turning dinner into a production.
What to book first for the December 2024 opening
The booking order is simple. Track Roi Chak Sam first, because Chef Ton’s Le Du credential gives it the sharpest pull for restaurant travelers. Put The Cotton Room second if Arora’s Indian concept, afternoon tea or a flexible daytime meal fits your trip. Use T’ang Court for groups, private dining and Cantonese comfort with Michelin-linked lineage. Keep Crowntail for the first drink, the last drink or the night you want to inspect the property without committing to a full dinner.
There are still practical gaps. Langham has not published menu prices, opening reservation mechanics, seat counts or phased-launch details in the announcement. Until those land, the right move is to track the hotel’s dining pages rather than assume every venue will be fully available from day one. For a December 2024 hotel opening, early service can also mean shifting hours and soft-opening constraints. Book with a little margin in your schedule, especially if you are flying in for a specific table.
Langham Custom House Bangkok is worth tracking because the chef roster is not decorative. Ton, Arora, Ricky Lin, Executive Chef Phukvarun ‘Golf’ Watchmon, Prot Stitpittayayut and Tom Hearn each map to a specific part of the day: Thai dinner, Indian-led all-day dining, Cantonese private rooms, pastry and afternoon tea, and cocktails. That gives the hotel more than one reason to enter your Bangkok plan.
The next thing to watch is not another chef name. It is the reservation release, menu structure and whether the hotel staggers the openings across Roi Chak Sam, The Cotton Room, T’ang Court and Crowntail. If those details match the credentials already announced, the restored Custom House could become the rare Bangkok hotel where staying on property for dinner is the point, not the compromise.
