Jason Bunin, who was executive chef at the Knickerbocker before moving on to Vintage Irving and Sidecar and then bringing “caviar nachos” to Hudson Terrace, has taken a gig as chef of the Ainsworth. In an attempt to upgrade the menu installed by chef Dave Feimster, we’re told he’s ditching Sysco products (wait a minute — Feimster was marketed as a locavore!); making marinades and sauces; grinding ginger from scratch (in the case of the Thai chili buffalo rings); and adding daily specials as well as menu items such as lamb burgers stuffed with goat cheese. The quarter chicken you see here is now paired with roasted asparagus instead of a fried side. No word on whether the nachos will be topped with caviar.