Bro, Yong Tau Foo soup is genuinely one of the hawker stall MVPs for anyone trying to eat less. Around 300 calories for a proper 8-piece bowl in clear broth, with 24g of protein from all that fish paste, is hard to beat. The broth itself is basically free at only 25 calories for 250g of soup. To be straight with you though, that 300 figure is a solid ballpark estimate because hard nutritional data for YTF is thin and every stall stuffs their pieces differently. Some auntie might pack twice the fish paste into her bitter gourd, and suddenly your 170-calorie stuffed items column is off. Use 300 as a working number, not gospel.
What actually changes the maths is your piece selection and whether you go dry or soup. One or two fried pieces like tau pok or fried tofu skin sneaks in an extra 50-70 kcal right away. Go for the soup version and stick to tofu, bitter gourd, okra, fish balls, and eggplant and you are looking at closer to 280 calories. Swap to the dry version with sweet sauce and you are at 360 before you even add noodles. Add bee hoon or kway tiao and the bowl jumps to around 480 calories lah. The good news is you have full control at the ordering stage, which is more than you can say for most hawker dishes.