Double Mushroom Whopper

ダブルマッシュルームワッパー · ¥1,440 (~$9.12) · 1031 kcal

Two beef patties under the same four-mushroom topping and pepper mayo. Set ¥1,740, LL set ¥1,890. 1,031 kcal and 389 g on the nutrition table. Limited time from September 18, 2026; the site puts no end date on it.

Image © Burger King Japan, shown to identify the product. Price checked 2026-10-04; prices are the tax-inclusive yen figures Burger King Japan's own web menu (burgerking.co.jp) showed on the check date, which its legal notice page (特定商取引法に基づく表記) and campaign notes state are tax-inclusive; the single-item price is given, with set prices (fries S and drink M) in the blurb; the site prints a tilde after a price when larger variants exist; some items are not sold at a few named stores and limited items carry no end date.