This is the entire point of eating at Dim Sum Go Go, a sleek little dim sum joint on the edge of Chinatown that won’t make your head spin with gaudy gold decorations like the famed Jing Fong: It’s listed on the menu as “pumpkin cake“, and I didn’t even bother trying to get more information about it from the waiter before I ordered. If it’s pumpkin-flavored, I’m there. It’s pretty clearly not cake, though. It’s more like a firm custard with a little bit of gelatin thrown in, thick enough that you can slice it but wiggly enough that it’ll fall onto your neighbor’s lap if you get distracted…