^ Are you sure you didn't mean quart? That is what a standard ball/mason jar is.
It's different when you are cooking down to make a jelly/jam/sauce but there is no way you are fitting a dozen+ sliced up jalapenos that equal a pound into a pint. A pound of ground beef can be smashed into a pint jar, but no way a pound of fruit/veggie will fit.
I may prove myself wrong here as I am ordering 10lbs of jalapenos to check this recipe out because it hits me. Hopefully I can make some Christmas stockings in time.
Oh, and, I don't care who ripped off whom, but this recipe reads very much like the original posting but with some slight differences. I like the idea of packed brown sugar over pure white cane:
Spicy jalapeño slices in a sugary glaze, these Candied Jalapeños (aka Cowboy Candy) are the perfect sweet-and-spicy condiment to liven up your favorite foods!
bellyfull.net
Also, 20 jalapenos is closer to a single pound, not three pounds.
So, again, to OP or any others that have made this, can you please confirm your recipe, quantities, etc?