[Tasted!] Autumn Gourmet Burgers Are Born! Freshness Burger Releases 2 Limited-Time "Mushroom Cheese Burgers"!

When it comes to Freshness Burger's staple autumn menu, it is the "Mushroom Cheese Burger." Since its release in 2018, its popularity has taken root, becoming a burger that lets you feel the arrival of autumn. While other companies launch tsukimi (moon-viewing) products, being able to enjoy a burger using autumn flavors and mushrooms is unique to Freshness Burger!

In 2026, in addition to the popular and richly aromatic "Porcini Cream Sauce," a new "Sirloin Bolognese Sauce" using 100% ground sirloin makes its debut.

[Point of Commitment 1] 30-Second Grilled Raw Mushrooms!
What is used are "domestic raw mushrooms." Unlike the commonly used canned ones, they have a rich and delicate flavor. To bring out the original umami and aroma of the ingredients, they are intentionally cut into large chunks to create a hearty presence. And what further elevates this deliciousness is the "30-second" grill. It is said that 30 seconds is the best timing arrived at after repeated trial and error.

[Point of Commitment 2] Rich Sauces Abundantly Using Premium Ingredients
For the "Porcini Cream Sauce," porcini—one of the world's top three mushrooms—is used, and for the "Sirloin Bolognese Sauce," 100% ground sirloin is used. It offers a luxury reminiscent of enjoying a French dish.

[Point of Commitment 3] Juicy Patty and Rich Red Cheddar Cheese
The patty is a thick quarter-pound beef patty. Layered with perfectly paired Red Cheddar cheese, a melting richness and smooth flavor are added!

We got to sample them a little ahead of time, so let us introduce them.

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"Mushroom Cheese Burger: Porcini Cream Sauce" — 890 yen
A richly creamy and luxurious sauce with depth added by white wine. Finely chopped mushrooms are also added inside the sauce, creating a finish where you can feel the ingredients even more. The moment it enters your mouth, the umami of the mushrooms and the rich aroma of the sauce spread throughout your mouth.

[Tasting Review]
The presence of the chunkily cut raw mushrooms! Although it is a sauce with deep umami, it is not that heavy, so you can firmly feel the delicate flavors. Not to mention the beef patty and Red Cheddar, the sweetness of the grilled sliced onion is also a great balance!

Furthermore, the refreshing crispness of the lettuce is added. It is a burger that makes you feel the arrival of autumn.

NEW! "Mushroom Cheese Burger: Sirloin Bolognese Sauce" — 890 yen/span>
Uses 100% ground sirloin. The coarse and just-right meaty texture of the sirloin, the soft acidity of the tomato, and the depth of the red wine create an adult-oriented flavor. It features the sweetness of vegetables such as onions, carrots, and celery, accented by a zesty kick of black pepper.

[Tasting Review]
Full of reward feels! Differing from the beef patty, the flavor with the umami of sirloin and the depth of red wine is a taste you want to eat slowly on long autumn nights. The aroma brought out by grilling the raw mushrooms nestles up to the sauce, allowing you to taste an indescribable sense of luxury. Want to enjoy it on the weekend with alcohol!

The wildly popular "Craft Lemonade" also introduces "Shine Muscat" for the first time. It uses domestic Shine Muscat grapes that reach their peak season in autumn.

"Shine Muscat Craft Lemonade Soda" (ICE) — 560 yen

"Shine Muscat Craft Lemonade" (HOT) — 560 yen

Combined with lemon slices thoroughly steeped in honey inside the store are Shine Muscat grapes marinated in honey and fruit vinegar. Cutting one in half, 2 whole grapes are used per cup, spreading an elegant and refreshing aroma.

Not to mention the crisp and refreshing Lemonade Soda, the Hot Lemonade where you can take a breather is also recommended. When you finish drinking, let's delicious taste the muscat grapes themselves as well.

Though hot days still continue, these days we have come to feel the autumn breeze once the sun goes down. Let's fully savor the deliciousness of mushrooms and Shine Muscat reaching their season to heal summer fatigue.

Available At	Freshness Burger nationwide (excluding some locations)
Sales Period	August 26, 2026 (Wed) – October 13, 2026 (Tue)
Official Website	https://www.freshnessburger.co.jp/

Information is current as of August 19, 2026.