Which Nathan's Famous Services, Inc. products are vegan?

• Nathan's Famous Services, Inc.

  BEEF BUN LENGTH FRANKS, BEEF
• Nathan's Famous Services, Inc.

  JALAPEO & CHEDDAR BEEF FRANKS, JALAPEO & CHEDDAR
• Nathan's Famous Services, Inc.

  QUARTER POUND BEEF FRANKS, BEEF
• Nathan's Famous Services, Inc.

  CONEY ISLAND BEEF BAGEL DOGS, BEEF
• Nathan's Famous Services, Inc.

  JUMBO FOOT LONG BEEF FRANKS, BEEF
• Nathan's Famous Services, Inc.

  ORIGINAL FLAVOR BEEF FRANKS, ORIGINAL
• Nathan's Famous Services, Inc.

  BEEF COCKTAIL FRANKS, BEEF
• Nathan's Famous Services, Inc.

  BEEF FRANKFURTERS
• Nathan's Famous Services, Inc.

  CHEESE SAUCE HOT DOG TOPPING, ORIGINAL
• Nathan's Famous Services, Inc.

  ORIGINAL 100% SKINLESS BUN LENGTH BEEF FRANKS, ORIGINAL