It's an ink toner, if you're buying this specific ink toner than you know it's an ink toner. It doesn't do much, but provide you with ink, that you stick in a printer, and does inky things. What is there to write about it? It works, and that's good.
I definitely won't recommend putting ink on your scrambled eggs for example, that'll be bad. Don't do that, it's not edible. If your SO insists, however, I suggest you find a new SO. Ink isn't for scrambled eggs.