Jaljeera is conceptually simpler than Chaat Masala, it is jeera (cumin) with jal (water). It is a refreshing summer drink. Fancier versions add black salt, aam chur, ginger powder, mint etc. and get close to Chaat Masala.

And it is also a good ornamentation for Indian cocktails. Its application is similar to that of bitters in Western cocktails.