I haven't had a real White Castle burger in thirty plus years! I'm thinking of going to the Chicago show just so I can do a dedicated feeding.
I'm in Phoenix; but went to Big Bear in Ca to ski and Superbowl. As I did last year, I went out of my way on the way home to stop at the Original Tommy's Burgers in Mission Grove (Riverside). They have a 1/4 pound patty available now, and I reluctantly tried it (a double). Boy, am I glad I did! It has the same character and essence as the (obviously still available) original. It's increased size is horizontal, not vertical. As I always do, I ordered it with grilled onions, and ordered it with extra chilli (bowl-style!), and a side of chilli to ensure every bite was slathered with the swill!
Another positive is it is a true double double. The original double cheeseburger came with only one slice of cheese. Locals knew to order the extra slice; but novices could easily think they were getting cheese on both patties, and in truth be suffering an indignity.
Bottom line, for this chow-hound? This was the perfect size. Many times in the past forty years (Exactly. Ate my first in 1974!), I've been stuck in the slug zone of still being hungry after one; but not hungry enough for a second. On many occasions I've ordered a second anyway. The single and triples don't do it for me. The double double with grilled onions and extra chilli is the one for me.
I'm not sure if all the locations have availability yet; but big thumbs up, and here's hoping it stays.