Ketracel White

[mccoyco64]

What use outside of jem hdar char? One would think you could turn it in as contraband..? Unless you like lowering your stats..?

[cap-boulanger]

You can make Gamma tribbles with it.

There's also Jem'Hadar BOFFs you can get. (One as an episode reward, and three in the Zen store Gamma expansion bundle.)

[NuclearSnail]

you can use it in crew assignments