This here is Nitro Black Matter ($7), cold brew coffee passed through nitrogen and poured from a tap like Guinness.

The folks at Chye Seng Huat were nice enough to offer a taster shot, which was intriguing enough to make me want a cup. But the bubbles fizzled and the black matter lost its coolness and I could barely bring myself to finish even half of it.

Best gulped down while fresh from the tap.