Will it be a black liquid or something else?

He nodded, taking a sip of the strong, black liquid.

He was staring down into the black liquid, his mouth set in a brooding line.

Elata took a long sip of the strong, black liquid, then began to write.

Petroleum, also called crude oil, is a thick and black liquid.

He shook his head and gingerly tasted the hot, black liquid.

She lived off the black liquid and couldn't go all night without.

The scientist watches as she slides into the thick black liquid.

The crude oil pumped out of the ground is a black liquid called petroleum.

About the size of his thumb, it was filled with a thick, black liquid.