Yakiniku is priced by the plate and counted by the plate, and each plate is 80 to 100g. That is the trap. One plate of kalbi looks like 6 small pieces. It is 370 calories, more than a bowl of rice, and a normal order is 3 or 4 plates per person. The marbling that makes kalbi good is fat at 9 calories per gram, and a fatty short rib slice is 30 to 40% fat by weight. Harami is the lean choice at about 250 per 100g. Tongue (tan) is around 220. Tripe and offal are 150 to 200 and nobody orders enough of them to matter.
Then the rice and the tare. A 200g bowl of rice is 310 and at yakiniku it is a sauce sponge, so the tare that drips onto it adds 50 more. Tare itself is soy, sugar, garlic and sesame oil at about 15 calories per tablespoon, and over a meal you go through 3 or 4. The pickles and kimchi are free. The salad with sesame dressing is 120. Beer is 150 a glass, and yakiniku is the one meal in Japan where people order 3.
Tabehodai (all you can eat) at Gyukaku or Anan is where it becomes a 1,800 calorie sitting. Four hundred grams of meat is the average, 1,300 calories of it if half is kalbi, plus rice, plus the nomihodai beer. It is not a bad meal in terms of protein, 100g of it, but the fat is 90g and that is a full day's worth in 90 minutes. The version that works is 200g of meat with more harami than kalbi, one bowl of rice, one beer, and the free kimchi and lettuce wraps doing the volume.