When can I buy the Fat Witch New York x Baskin-Robbins Brownie Set?

The set goes on sale October 3, 2026, at Fat Witch New York Shimogamo, Fat Witch New York Daikanyama, and the Japanese online store.

Where can I get the Fat Witch Brownie Double Sundae?

It is available at selected Baskin-Robbins stores from October 1 through October 31, 2026. Some stores may not offer it, and availability ends when supplies run out.

How much are the collaboration items?

The six-piece brownie set is ¥2,592 (tax included), while the Double Sundae is ¥880 (tax included). Prices may vary at some Baskin-Robbins stores.

Fat Witch New York x Baskin-Robbins Brownie Set, ¥2,592 From Oct 3

A top-ranked Baskin-Robbins flavor collection returns in a new form at Fat Witch New York, with a collaboration brownie set launching in Shibuya, Tokyo this autumn.

The six-piece set goes on sale October 3, 2026, at selected Fat Witch New York locations and its Japanese online store. A separate Fat Witch brownie sundae is available at selected Baskin-Robbins stores from October 1 through October 31, while supplies last.

The Fat Witch New York x Baskin-Robbins Collaboration Brownie Set costs ¥2,592 (tax included) and contains six brownies in three flavors: Love Potion 31, Chopped Chocolate, and Chocolate Mint. The Fat Witch Brownie Double Sundae costs ¥880 (tax included).

Table of contents

About the Collaboration
Menu & Availability Details
1. Before you buy

About the Collaboration

Love Potion Thirty-One flavor, which was ranked number one for three consecutive years in the Thirty-One Flavor General Election, is inspired by the popular flavor 'Love Potion Thirty-One.' Its exquisite taste combines the sweet and tart flavor of raspberry with the gentle sweetness of white chocolate. The brownie is priced at ¥2,592 (tax included). — Love Potion Thirty-One flavor, which was ranked number one for three consecutive years in the Thirty-One Flavor General Election, is inspired by the popular flavor ‘Love Potion Thirty-One.’ Its exquisite taste combines the sweet and tart flavor of raspberry with the gentle sweetness of white chocolate. The brownie is priced at ¥2,592 (tax included).

Love Potion 31 Brownie

Inspired by Baskin-Robbins’ Love Potion 31 flavor, this brownie combines tart raspberry with the gentle sweetness of white chocolate. It is included in the six-piece collaboration set priced at ¥2,592 (tax included).

Chopped Chocolate flavor - a must-try for chocolate lovers! This brownie is inspired by the popular 'Chopped Chocolate' flavor, offering a rich taste and a delightful texture with two types of chocolate chips. The Chenyu NY x Thirty-One Ice Cream Collaboration Brownie comes in a 6-piece set for ¥2,592 (tax included). Please note that Fat Witch Brownie Double Sundae is not available. Enjoy the rich chocolate experience packed into this delicious treat. — Chopped Chocolate flavor – a must-try for chocolate lovers! This brownie is inspired by the popular ‘Chopped Chocolate’ flavor, offering a rich taste and a delightful texture with two types of chocolate chips. The Chenyu NY x Thirty-One Ice Cream Collaboration Brownie comes in a 6-piece set for ¥2,592 (tax included). Please note that Fat Witch Brownie Double Sundae is not available. Enjoy the rich chocolate experience packed into this delicious treat.

Chopped Chocolate Brownie

This brownie recreates the popular Chopped Chocolate flavor with a rich chocolate taste and two types of chocolate chips. It comes in the six-piece set, priced at ¥2,592 (tax included).

Chocolate Mint flavor, a long-time favorite and representative of Thirty-One flavors, is inspired by the 'Chocolate Mint' flavor. It is crafted to balance refreshing mint and prominent chocolate chips, resulting in a perfect brownie. The brownie is priced at ¥2,592 (tax included). — Chocolate Mint flavor, a long-time favorite and representative of Thirty-One flavors, is inspired by the ‘Chocolate Mint’ flavor. It is crafted to balance refreshing mint and prominent chocolate chips, resulting in a perfect brownie. The brownie is priced at ¥2,592 (tax included).

Chocolate Mint Brownie

Refreshing mint and generous chocolate chips express the character of Baskin-Robbins’ Chocolate Mint flavor. The brownie is one of three varieties in the ¥2,592 (tax included) collaboration set.

Founded in 1998 in New York, USA, Fat Witch is a specialty brownie shop. It gained popularity after opening in Chelsea Market, attracting many New Yorkers and tourists. Known as 'the place for brownies in NY,' it expanded to Japan in 2015, offering rich flavors and authentic NY taste. It now operates physical stores, an online store, and participates in events nationwide. Fat Witch New York official site: https://www.fatwitch.co.jp/f/fatwitchnewyork — Founded in 1998 in New York, USA, Fat Witch is a specialty brownie shop. It gained popularity after opening in Chelsea Market, attracting many New Yorkers and tourists. Known as ‘the place for brownies in NY,’ it expanded to Japan in 2015, offering rich flavors and authentic NY taste. It now operates physical stores, an online store, and participates in events nationwide. Fat Witch New York official site: https://www.fatwitch.co.jp/f/fatwitchnewyork

About Fat Witch New York

Founded in New York in 1998, Fat Witch New York became known for its rich, home-style brownies after opening at Chelsea Market. The brand began selling in Japan in 2015 and now operates stores, an online shop, and event stalls.

Fat Witch New York brings its dense, moist brownie style to familiar Baskin-Robbins flavors. The recipes were tested with different chocolate-chip types, sizes, and mixing methods to preserve both the character of each ice cream flavor and the rich texture expected from a brownie.

Fat Witch New York x Baskin-Robbins Brownie Set, ¥2,592 From Oct 3

Highlights

The six-piece collaboration brownie set is ¥2,592 (tax included).
Each box includes two brownies in each of three flavors: Love Potion 31, Chopped Chocolate, and Chocolate Mint.
The Love Potion 31 brownie combines tart raspberry notes with white chocolate.
The Chopped Chocolate brownie uses two types of chocolate chips for a rich, textured bite.
The Chocolate Mint brownie pairs refreshing mint with prominent chocolate chips.
The Fat Witch Brownie Double Sundae is ¥880 (tax included) and includes two pop-size ice cream scoops, whipped cream, a whole brownie, pretzel chocolate, crushed almonds, and chocolate syrup.

Menu & Availability Details

Item	Details
Name	Fat Witch New York x Baskin-Robbins Collaboration Brownie Set; Fat Witch Brownie Double Sundae
Menu / items	Six-piece brownie set: Love Potion 31, Chopped Chocolate, and Chocolate Mint, two of each; Double Sundae with two pop-size ice cream scoops, whipped cream, brownie, pretzel chocolate, crushed almonds, chocolate syrup, and a collaboration pick
Release date	October 3, 2026, for the brownie set
Period	October 1, 2026 – October 31, 2026, for the Fat Witch Brownie Double Sundae; ends when sold out
Location	Fat Witch New York stores and Japanese online store; selected Baskin-Robbins stores for the sundae
Stores	Fat Witch New York Shimogamo, Kyoto; Fat Witch New York Daikanyama, Shibuya, Tokyo; Fat Witch New York Online Store Japan; selected Baskin-Robbins stores
Address	Fat Witch New York Shimogamo, Kyoto Fat Witch New York Daikanyama, Shibuya, Tokyo
Price	Fat Witch New York x Baskin-Robbins Collaboration Brownie Set, ¥2,592 (tax included); Fat Witch Brownie Double Sundae, ¥880 (tax included)
Official website	Fat Witch New York; Baskin-Robbins Japan

Before you buy

When can I buy the Fat Witch New York x Baskin-Robbins Brownie Set?: The set goes on sale October 3, 2026, at Fat Witch New York Shimogamo, Fat Witch New York Daikanyama, and the Japanese online store.
Where can I get the Fat Witch Brownie Double Sundae?: It is available at selected Baskin-Robbins stores from October 1 through October 31, 2026. Some stores may not offer it, and availability ends when supplies run out.
How much are the collaboration items?: The six-piece brownie set is ¥2,592 (tax included), while the Double Sundae is ¥880 (tax included). Prices may vary at some Baskin-Robbins stores.