Gorkha is not a destination for food tourism, but eating here is cheap, honest, and satisfying. The Gorkha Bazaar has several daal bhat restaurants that serve the Nepali standard meal — lentil soup, rice, vegetable curry, and pickles — for a very small price. These places have no menus and no pretensions, and they are usually the best option for lunch after the hike up to the Durbar.
The guesthouses around the bazaar area serve a broader range of dishes in the evenings, including the usual trekking-lodge standards: noodles, fried rice, momos, and omelettes. Expect simple, functional cooking.
Alcohol is available at a few of the guesthouses. Local Khukri rum, named after the curved Gurkha blade, is the most interesting option and worth trying once.