The pastry surrounding the kidney pie being eaten by Dr. Lecter (Mads Mikkelsen) resembles the face mask worn by Lecter (Anthony Hopkins) in The Silence of the Lambs (1991).
Mukozuke is a sliced dish of seasonal sashimi.
When Wil is taken to see Beverly's body he is placed in a straight jacket & mask & transported on a wheeled cart similar to Hannibal in Silence of the Lambs.
The odd antique looking handgun that Freddie Lounds carries in her purse is a Bond Arms Texan. It is a modern production pistol, but made in retro style.
A grisly nod to the (edible) animal installations of Damien Hirst: bisected cow and calf, sheep and "This Little Piggy" especially.