This drawing was done on black scratchboard, using a utility knife to scrape and scratch out the white bits. The black ink chips off in specks like finely ground pepper. The result is it sounds like I'm blowing out birthday cake candles (to clear the dust) when I'm working with it. Scratchboard drawings can resemble engravings.
Scratchboard is made from poison ivy leaves and causes frantic itching. Although that last sentence is a fib, it does sound plausible.