The intelligent snake has all the smarts of a human, as well as the accompanying desire for luxury and refinement in their life beyond fulfilling their basic needs. What they lack is appendages, and much of our teeth.
The end of the tail of the intelligent snake is prehensile enough and can, with practise, hold a single instrument and operate it with some dexterity. A spoon or a prong would work. That would allow an intelligent snake to eat soups, stews, or anything that can be skewered in one piece and transported to their mouth. Anything in need of cutting up, or anything that would just roll around a clumsy spoon (like peas), would be inadvisable to attempt.
Snakes also lack incisors, so they cannot easily bite off a piece of something larger, unless it is soft enough to tear off.
Another option, one that seems more natural: a single larger piece of food like haggis. It would be swallowed whole, approximating the natural habit of the intelligent snake's primal ancestors. The issue is that snakes also lack molars: they do not chew, therefore they would not be able to enjoy the taste inside such a dish. It is also clear how much snakes rely on their sense of smell; thus to make a feast a proper feast to them, the cuisine must be very odorous. Which brings us back to soups, which have the advantage of evaporation.
Basically, my question is if there's any sort of dish besides soup that intelligent snakes can eat with a single piece of cutlery, that they don't have to chew or bite in pieces to appreciate the flavour, and that comes with a smell.