Yes, the Baba Harbhajan Singh Temple in Sikkim, which is close to Nathula Pass, serves food and drinks. Simple snacks, hot tea, and drinks are available from modest food vendors and neighbourhood sellers located throughout the temple grounds. Comforting in the cold, a lot of vendors provide quick snacks like momos and Maggi noodles. But since there isn't a big eatery or café, it's a good idea to bring water and some little snacks in case you need them. The temple area also offers a calm setting for taking in the regional cuisine and taking in the beautiful and spiritual surroundings of this hallowed location.