Hi there,
the question is pretty simple, i would like to know where i could find in Manhattan the biggest burger.. something at least around 1pound or 20oz.
I always thought Jackson Hole had the biggest burgers, much too big for me. But their web site says they're 7 ounces, or less than half what you're looking for.
Good luck on your quest. Let us know what you find. And bring Alka-Seltzer!