Which White Castle System Inc. products are vegan?

• White Castle System Inc.

  CHICKEN & CHEESE BREADED CHICKEN BREAST WITH RIB MEAT ON OUR SIGNATURE BUN SLIDERS, CHICKEN & CHEESE
• White Castle System Inc.

  CHEESE BURGERS, JALAPENO
• White Castle System Inc.

  SAUSAGE, EGG & GHOST PEPPER BREAKFAST SLIDERS, SAUSAGE, EGG & GHOST PEPPER
• White Castle System Inc.

  CHORIZO, EGG & SMOKED GOUDA BREAKFAST SLIDERS, CHORIZO, EGG & SMOKED GOUDA
• White Castle System Inc.

  THE ORIGINAL SLIDERS BUNS, ORIGINAL
• White Castle System Inc.

  CLASSIC CHEESE SLIDERS WITH GRILLED ONIONS ON OUR SIGNATURE BUN, CLASSIC CHEESE
• White Castle System Inc.

  CLASSIC CHEESE SLIDERS BUNS, CLASSIC CHEESE
• White Castle System Inc.

  BLACK BEAN SLIDERS, BLACK BEAN
• White Castle System Inc.

  ORIGINAL SLIDER BUNS, ORIGINAL
• White Castle System Inc.

  PEANUT BUTTER PIE FUDGE-DIPPED DESSERTS ON-A-STICK, PEANUT BUTTER PIE