Brown Solid

What is the brown solid drug in the Breaking Bad episode 11?

The brown solid in the Breaking Bad episode 11 as Jane mixed it with some meth and injected it into Jesse’s body making him very high.
I think it’s heroin,is it right? but why is it brown and not in powder form?

It is Herion. An Opiate. Same class as Codeine, Morphine, Percocet and Oxycotton.
..and when mixed with Meth, it’s called a Speedball.

And is responsible for many,.. an Overdose.

Pal Vasvari Band Plays “Solid” By Dean Brown