Automated cooking seems more achievable to me, at least somewhere like McDonalds with fairly standardized items. The inputs and outputs are much more defined and there's much less need for AI.

> Maybe they can design automated kitchens that work like jumbo dish washers. Seal, flood, heat, drain, reopen. The robot janitors could take the form of underwater scrubbing drones.

Anything that complex would probably go through a chemical wash rather than having a robot get into every corner. Some medical equipment like endoscopes are cleaned this way.