There's a Japanese restaurant called Sushi Ya--a very small walk-in place with just 5 or 6 tables and a tiny sushi bar. They have one item called a Kelman roll that is absolutely delicious. I find myself seriously craving it on a regular basis. The roll is quite large and is cut into several pieces and is a delightful study in contrasting textures and flavors--crunchy, salty, creamy, sweet, cold. I presume it cannot be authentically Japanese as it includes a delicious kind of mayonnaise--I know it sounds strange but it's delicious (also Kelman, wonder what the story is behind the naming). I always order two and come away a little overfull; one is not enough and two is a bit too much.
I have tried many other things on the menu and they are OK, some are good, but nothing to distinguish them from the pack. Salad that comes with most dinner orders is perfunctory enough to be useless--iceberg with a drizzle of orange dressing.
I have pretty much given up eating in Nassau; have been disappointed so many times. I almost always make the trek to Queens. There are a few exceptions: pupusas in Carle Place, dosas in Hicksville. But generally over the ten years I have been on Long Island, the finds still pale to what is readily available in Queens. So this is a real delight, even if it is only one item!
Sushi Ya is on Merrick Road, around the corner from North Village Avenue.