Haven't come across a stall like this in a mainstream-ish food court like Koufu! Pretty interesting, they have skewers like those for satay lok lok and you can mix and match as many as you'd like (3 meat and 3 veg for $5.50) if I remember correctly. I went for another fixed item 招牌捞渔粉, which sounded dodgy but tasted really good! Came with super fresh fish, veg, tofu and buckwheat noodles in a rather milky sesame broth - kinda like pork collagen broth from BIAP but less salty and way healthier. Reminded me of a cold winter day in Beijing some months back :-)