It taste not bad. Later, my friend tells me that when they need food for filming, it's mostly taken from that canteen. He proceeds to point out to me which stall that they got the laksa that Tay Ping Hui cooks for. :P
Come to think of it, having their food appear in TV doesn't mean anything at all. It's only for filming and it doesn't matter to the filming crew whether it taste nice. It's only the actors and actresses who will get a harder time if the food is lousy.