Explain this "magic" trick

It’s a cool little trick.

Take the brown strip off a matchbook (the part you strike the match on)

Turn it face down in a glass ashtray and light it on fire.

After all the paper had burned away, blow off the ashes. You’ll see a light brown goo on the glass.

Put a little of this goo between your thumb and index finger.

Do some hocus-pocus bit for your friends then rub your index and thumb together… watch as smoke magically appears from nowhere

My question. Why?

What is that goo anyway? What is that brown strip made of?

Ah… I can’t answer your question, but I remember that during my trip to Japan, we bought this stuff called kemurigami (smoke-paper) which is paper covered in a sticky powder. When you put some on your index and thumb and rub them around, this stuff that looks like smoke comes out. It’s actually some sort of fibrey stuff, because if you do it enough you’ll notice some white powdery stuff around you on the floor.

This is what is in the strip -

How do safety matches work ?

Phosphorus Sesquisulphide

This link suggests soaking it before burning it.

How to Be So Hot You Smoke