here's what you can bring in a checked bag, not carry on(as i've brought these stuffs with me):
- gundruk
-masyaura
- gaaleko achaar
- ghiu
- all kind of ground spices (jeera/dhaniya/khursani/besar etc)
- teel, silaam, methi, jwano, etc
- daalmoth, bhujiya, chauchau, etc
- dry nuts and fruits (nariwal, badam, okkhar, etc)
- chhurpi, paau, titaura, etc

just pack them securely so that nothing leaks/breaks otherwise your clothes will smell bad/ruined
and no such "special packing tectics" or hiding required.