Sumi Tei Yakiniku
Marche Thonglor Room, Marche Thonglor, 2nd Floor Building B 144, Number THL02LS205, Khlong Tan Nuea, Watthana, Bangkok 10110
Over a decade in, this is still the clearest answer to where you eat serious yakiniku in Bangkok. The Super Premium Thai Beef option at roughly half the price of the wagyu set makes the kitchen genuinely accessible without softening its identity. Advance reservation is required for the buffet, and that friction is worth planning around.
Sumi Tei Yakiniku opened in November 2014 with a single claim: it is the only yakiniku restaurant in Thailand serving Imperial Wagyu A5. That claim has held for over a decade.\n\nThe beef itself explains why the restaurant built around it. High-grade A5 wagyu carries a fat-to-lean ratio dense enough that it renders at lower temperatures than conventional beef. On a live-charcoal grate, cuts like karubi or zabuton begin to glisten within seconds, the intramuscular fat pulling through the meat until each bite arrives at the table with barely any resistance. The texture is closer to fatty tuna than to steak. Thick cross-section cuts need only brief contact with heat; pull them early or the fat runs off and the point is lost.\n\nThe kitchen is the product of three collaborators: Konoike-Sotus Group on logistics and sourcing, The Original Farm as restaurant operator, and Chef Kumpoon's culinary team. Chef Kumpoon holds more than 25 years of yakiniku experience and is credited as one of the first practitioners to introduce the format to Thailand. Seasonal sourcing direct from Japan governs what lands on the grill.\n\nFor guests who want the format without the full outlay, the restaurant offers Super Premium Thai Beef sourced from a cooperative livestock farm in eastern Thailand, with only the top 15 percent of available stock selected. It is a structurally different eating experience from the wagyu, leaner and with more chew, but the kitchen applies the same sourcing discipline.\n\nThe restaurant sits on the second floor of Building B at Marche Thonglor. Weekend hours open at noon for a lunch sitting. Weekday service starts at 5PM. Free on-site parking is available, with multi-storey and paid lot options in the same complex.