You can enjoy Bhagsu-Cake which is available at stores near Bhasunag, that's a speciality. You can try Thukpa (veg/Non veg), a Tibetan food. Apart from that, the Paneer Momo's in the market are awesome, especially in the winters😍. Everything is not that expensive, So enjoy...!!!
I suggest you to explore tibetian cuisines like Chicken Shapta with Tingmo bread.
Laphing is street food you can eat near temple road it is veg.
You can also try bao. Bao is stuffed steamed bread.