Alison Brie knows her pasta. Jeff Baena’s “Spin Me Round” stars Aubrey Plaza, left, Alison Brie, Alessandro Nivola and Ayden Mayeri. “It was so informative reading this paragraph from the chef to say something like ‘Salt the water until it’s as salty as the sea,’” says Brie. “I would imagine it was excruciating for him as a chef to be …