Gate-side dim sum and coffee in Terminal 1
Lhong Tou Café sits airside in Don Mueang Terminal 1 and leans Chinese, not Thai: think steamed buns, congee, and milk tea instead of pad thai. It works for a sit-down bite before international flights from T1, and also for a quick takeout snack you can carry to the gate. Expect café-style service and counter payment, not a full restaurant production.
The menu skews small plates and snacks, so you can mix a few dishes instead of committing to one big main. Typical orders at other Lhong Tou branches run to BBQ pork buns, egg tarts, congee bowls, and rice dishes under about 200–250 THB each. Drinks are a draw: Thai milk tea, Hong Kong–style milk tea, and coffee usually land in the 80–120 THB range, cheaper than many Western chains in DMK.
Plan on airport pricing but not total sticker shock compared with central Bangkok. Two people sharing 2–3 dim sum plates and 2 drinks will usually end up around 400–600 THB. Portions run on the lighter side, so if you have a long-haul out of Terminal 1, order one extra plate rather than counting on a single bowl or bun to hold you for a 5–6 hour flight.
Service speed at other Lhong Tou locations is often around 10–15 minutes for hot food, which should still work on a 45–60 minute pre-boarding window at DMK. Tables tend to be small café two-tops, fine for hand luggage but tight for big roller bags. This is post-security in Terminal 1, so you can settle in after passport control instead of hanging landside in the public area.
Tip: if your flight boards from a remote gate in Terminal 1, finish your drink at the café and then walk to the gate; staff at DMK sometimes start bus boarding 30 minutes before departure, and you don’t want to abandon a 100 THB milk tea half-full.