Make Your Summer in Kawagoe Even More Delicious and Cooler "Kawagoe Butter Sand" Launches Three Limited-Edition Shakes Starting Saturday, August 1, 2026

Starting Saturday, August 1, 2026, the butter sandwich specialty shop “Kawagoe Butter Sandwich” (Kawagoe City, Saitama Prefecture) will begin selling three summer-limited drinks—“Sweet Potato Mont Blanc Shake,” “Strawberry Shake,” and “Uji Matcha Shake”—exclusively in-store.

These new, refreshingly rich shakes are perfect for summer outings exploring Kawagoe or enjoying street food. Generously made with the same high-quality ingredients used in the shop’s signature butter sandwiches and sweet potato Mont Blanc soft-serve ice cream, these shakes let you enjoy the authentic flavors unique to a specialty shop.

Kawagoe Butter Sandwich: 3 Shake Varieties

■Development Background

Summer in Kawagoe is bustling with tourists every year. We developed these limited-time shakes with the hope that visitors would enjoy strolling through Kawagoe and sampling local foods even in the heat.

We’ve crafted a drink that lets you savor the exact flavors of the “Kawagoe Butter Sandwich,” offering a summery experience both in appearance and taste.

■Product Features

1. A Summer-Exclusive Menu Perfect for Strolling and Sampling Food in Kawagoe

A refreshing drink you can enjoy effortlessly even in the heat. With its Instagram-worthy appearance and rich, satisfying flavor, it’s the perfect companion for exploring Kawagoe.

2. Three Distinctive Flavors

● Sweet Potato Mont Blanc Shake

Made with the same smooth, melt-in-your-mouth Kawagoe sweet potato paste used in our Butter Sandwich (Kawagoe Sweet Potato) and Sweet Potato Mont Blanc soft-serve. Topped with black sugar syrup, this luxurious treat lets you fully savor the rich sweetness of Kawagoe sweet potatoes.

Sweet Potato Mont Blanc Shake

● Strawberry Shake

Made with sweet-and-tart strawberry jam—the same used in the strawberry confit for our “Rich Strawberry” Butter Sandwich. Its soft pink color is vibrant and visually appealing, making it a cute treat that really gets you in the summer spirit.

Strawberry Shake

● Uji Matcha Shake

Made with the same Uji matcha paste used in our Butter Sandwich (Matcha Black Bean). We’ve crafted a refreshing, lightly sweetened flavor that lets you savor the authentic aroma and subtle bitterness of matcha.

Uji Matcha Shake

These limited-time shakes, available only this summer, offer a new way to enjoy exploring Kawagoe. Please visit our store to savor these three unique flavors, crafted with the carefully selected ingredients that only a specialty shop can provide.

■Product Overview

●Product Name

・Imonblanc Shake

・Strawberry Shake

・Uji Matcha Shake

●Sales Period

August 1, 2026 (Sat) – While supplies last (Summer Limited Edition)

● Price (tax included)

・Imonblanc Shake: 850 yen

・Strawberry Shake: 750 yen

・Uji Matcha Shake　　　850 yen

● Where to Buy

Kawagoe Butter Sand (In-store only)

■Store Overview

Store Name: Kawagoe Butter Sand

Address: 2-11-4 Motomachi, Kawagoe City, Saitama Prefecture 350-0062

URL: https://kawagoe-buttersand.com

Instagram: @kawagoe_buttersand (https://www.instagram.com/kawagoe_buttersand/)

Hours: 10:00 AM – 5:00 PM (Closed every Wednesday)

Access: Get off at “Tobu Kawagoe” Station, take the bus to “Ichiban-gai,” then walk 5 minutes

■Company Overview

Company Name: Nagatoya Co., Ltd.

Representative: Hiroyuki Kato, Representative Director

Headquarters: 12 Higashinokawa, Takadaji, Kitanagoya City, Aichi Prefecture 481-0011

Established: April 25, Showa 28 (1953)

Business Activities: Planning, manufacturing, and sales of confectionery; processing and sales of food products; operation of retail stores, etc.

Phone: 0568-22-8511

FAX: 0568-22-5651