After a long trek one of the things you look forward to is a blow out at one of Kathmandu's many excellant restaurants. Most wash vegetables in iodine water and treat drinking water. Don't spoil your holiday by getting food poisoning before you get out on the trail!
My recommendations for food and drinks are :-
The Rum Doodle steak, the atmosphere in the 40,000 and a half foot bar,the foot messages
Excellant food, expensive though
If you like large helpings of cake
Morning coffee, cinnamon rolls and apple strudel
If you like your steak, this is the one for you