Does this actually work?
to accomplish what?
I guess the question is “work for what?”
To get the same IBUs as boiling in wort.
no
I’ve had a wallflower beer that was under hopped do to a miscalculation I blame on a loose nut between the chair and keyboard. To salvage the beer I placed an oz of whole hops in a quart mason jar and poured boiling water over them. I let them stand an hour, then separated the hops from the tea, and added the tea to the beer. The tea was a VERY bitter beautiful golden color. Like I say it salvaged the beer and it actually turned out pretty good.
I don’t know about the same, but you will get IBUs.
Some is close enough for my need, thanks.