Possible Clues:

• Food-additive letters
• Jeremy Lin's arena, for short
• Flavor-enhancing additive, for short
• Rangers' venue, for short
• Home of the NY Knicks
• Cause of Chinese restaurant syndrome
• Sprinkle that adds umami, for short
• Headache source, for some
• Umami-enhancing additive
• Home of the Knicks: Abbr.