Aunt Stella's Cookies and Globally Beloved Peter Rabbit™ Announce First Collaboration

Aunt Stella Co., Ltd. (Headquarters: Minato-ku, Tokyo; Representative Director and President: Mitsutaka Murase), a group company of Morinaga & Co., Ltd. (Headquarters: Minato-ku, Tokyo; Representative Director and President COO: Shinya Mori), which operates the American country baked goods specialty store "Aunt Stella's Cookies," will implement a collaboration project with the globally beloved picture book "Peter Rabbit™" from May 15 (Friday) to June 14 (Sunday). *Sales of collaboration cookies will continue until June 30 (Tuesday).

We will release three types of collaboration cookies created by cherishing the warm, gentle, and rustic atmosphere of the Lake District farms in England, the setting of the Peter Rabbit™ stories, while also seeking commonalities with Aunt Stella's hometown, the Dutch Country of Pennsylvania, USA. These include the "Carrot Cake Cookie," a slightly adult-flavored cookie with spices; "Granola," which offers a crispy texture and a spreading sweetness with grains and nuts; and the "Lemon Tart Cookie," inspired by the traditional English dessert, lemon tart, from Peter Rabbit™'s homeland. Additionally, during the campaign period, the weighing cookie bags for in-store purchases will feature an original collaboration design.

As a collaboration commemorative gift campaign, customers who purchase 1,500 yen (tax included) or more of weighing cookies in-store will receive an original pocket clear file. The first phase will run from May 15 (Friday) to May 28 (Thursday), 2026, and the second phase from May 29 (Friday) to June 14 (Sunday). *While supplies last during each period.

On social media, we will offer original pocket clear files through an X (formerly Twitter) follow & repost campaign and an Instagram follow & like campaign. By increasing new brand fans through this collaboration with Peter Rabbit™, we aim to boost demand for souvenirs and personal consumption.

●Special Website: https://www.auntstella.co.jp/event_campaign/peter2026-collab *To be released at 11:00 AM on May 15 (Friday)

●In-store Poster

●Original Pocket Clear File ●Weighing Cookie Bag

■Three Types of Collaboration Cookies

●Carrot Cake Cookie

"Carrot Cake Cookie"

Finished as a slightly adult-flavored cookie with spices. Inspired by the traditional English dessert "carrot cake."

●Granola

"Granola"

Cookies with grains and nuts that offer a crispy texture and a spreading sweetness in the mouth.

Inspired by a perfect snack for tea time in the countryside of the Lake District, the setting of the Peter Rabbit stories.

●Lemon Tart Cookie

"Lemon Tart Cookie"

Made with lemon mince, this satisfying cookie offers both fragrant and sweet flavors simultaneously.

Inspired by "lemon tart," a traditional English dessert from Peter Rabbit's homeland.

*Contains 4.1% lemon mince

・Price: 100g 680 yen (tax included), Cookie shelf life: 30 days from sale date

■In-store Event

Presenting original pocket clear files

Participation method: One clear file will be presented for purchases of 1,500 yen (tax included) or more of weighing cookies.

Implementation period: First phase: May 15 (Friday) to May 28 (Thursday), 2026

Second phase: May 29 (Friday) to June 14 (Sunday) *While supplies last during the period.

■X Follow & Repost Original Pocket Clear File Present Campaign

Implementation period: First phase: May 15 (Friday) to May 21 (Thursday) 23:59, 2026

Second phase: May 29 (Friday) to June 4 (Thursday) 23:59, 2026

Participation method: Follow Aunt Stella's official X (formerly Twitter) @auntstella_jp, repost the campaign post.

Prize: Original pocket clear file for 10 winners each. *Designs differ between the first and second phases.

■Instagram Follow & Like Original Pocket Clear File Present Campaign

Implementation period: First phase: May 15 (Friday) to May 21 (Thursday) 23:59, 2026

Second phase: May 29 (Friday) to June 4 (Thursday) 23:59, 2026

Participation method: Follow Aunt Stella's official Instagram @auntstella.jp, like the campaign post image.

Prize: Original pocket clear file for 10 winners each. *Designs differ between the first and second phases.

■About Peter Rabbit™

The protagonist of "The Tale of Peter Rabbit" (original title: The Tale of Peter Rabbit by Beatrix Potter™), beloved worldwide. The stories of Peter Rabbit and his humorous friends are enjoyed in 48 countries across 110 regions.