Mushroom Swiss

Burger King’s Ultimate Mushroom Swiss Combo is now available for $9.90, featuring a burger, Cheezy Fries, Taro Pie, and Coke. Perfect for a satisfying and affordable meal, this limited-time promotion runs until 31 March 2026 after breakfast hours.

Celebrate Mushroom Day with Burger King Singapore’s 1-for-1 Mushroom Swiss promotion from 12–17 October 2025. Choose from Croissan’wich®, Single Mushroom Swiss, or Mushroom Swiss Tendergrill® for breakfast, lunch, or dinner and indulge without doubling the spend.