'Royal's Sweet Potato style' is born from 'Sugar Butter Tree Soft Cream'! A new sensational 'crunchy & fluffy' soft serve ice cream combining sweet potato x butter
Grapestone will release 'Sugar Butter Tree Soft Cream Royal's Sweet Potato style', a collaboration with Royal Co., Ltd., sequentially starting April 16, 2026.
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- 📰 Published: April 9, 2026 at 19:40
- 🔍 Collected: April 9, 2026 at 11:00
- 🤖 AI Analyzed: April 18, 2026 at 18:56 (223h 56m after Collected)
Grapestone Co., Ltd. (Headquarters: Ginza, Chuo-ku, Tokyo), which operates the butter cereal sweets specialty store "Sugar Butter Tree", will sequentially release a new product, "Sugar Butter Tree Soft Cream Royal's Sweet Potato style", in collaboration with "Royal's Sweet Potato" by Royal Co., Ltd. (Headquarters: Fukuoka City, Fukuoka Prefecture, President: Masahiro Shiraiwa), starting from Thursday, April 16, 2026.
### 'Royal's Sweet Potato style' is born from 'Sugar Butter Tree Soft Cream'!
The butter cereal sweets specialty store "Sugar Butter Tree" was born in 2010. The "Sugar Butter Tree Soft Cream" sold last year became a hot topic on SNS with comments like "Milky and delicious!", "The crunchy and fluffy texture is one of a kind!", and "Too intensely delicious." A new flavor commemorating the 1st anniversary of its birth appears from that "Sugar Butter Tree Soft Cream"! We will release "Sugar Butter Tree Soft Cream Royal's Sweet Potato style", a collaboration with "Royal's Sweet Potato", which continues to be loved as a famous Fukuoka souvenir for its particular deliciousness, baked by kneading butter and fresh cream into sweet potatoes from Kyushu.
Please try this new sensational soft serve ice cream packed with the deliciousness of "Sugar Butter Tree" and the deliciousness of "Royal's Sweet Potato", which was born in Fukuoka and has been loved for over half a century.
### Sweet Potato x Butter MIX! A soft serve ice cream that tastes just like a sweet potato
A new soft serve ice cream that tastes like a sweet potato, combining sweet potato x butter, has arrived. The natural sweetness of the sweet potato and the rich body of mellow butter fill your mouth, making it taste exactly like "Royal's Sweet Potato". We mixed in Kyushu sweet potato paste to give it a comforting sweet finish. Please enjoy the marriage of the taste of sweet potato and the rich, highly fragrant butter flavor unique to "Sugar Butter Tree".
### 'Royal's Sweet Potato style' is born from 'Sugar Butter Tree Soft Cream'!
The butter cereal sweets specialty store "Sugar Butter Tree" was born in 2010. The "Sugar Butter Tree Soft Cream" sold last year became a hot topic on SNS with comments like "Milky and delicious!", "The crunchy and fluffy texture is one of a kind!", and "Too intensely delicious." A new flavor commemorating the 1st anniversary of its birth appears from that "Sugar Butter Tree Soft Cream"! We will release "Sugar Butter Tree Soft Cream Royal's Sweet Potato style", a collaboration with "Royal's Sweet Potato", which continues to be loved as a famous Fukuoka souvenir for its particular deliciousness, baked by kneading butter and fresh cream into sweet potatoes from Kyushu.
Please try this new sensational soft serve ice cream packed with the deliciousness of "Sugar Butter Tree" and the deliciousness of "Royal's Sweet Potato", which was born in Fukuoka and has been loved for over half a century.
### Sweet Potato x Butter MIX! A soft serve ice cream that tastes just like a sweet potato
A new soft serve ice cream that tastes like a sweet potato, combining sweet potato x butter, has arrived. The natural sweetness of the sweet potato and the rich body of mellow butter fill your mouth, making it taste exactly like "Royal's Sweet Potato". We mixed in Kyushu sweet potato paste to give it a comforting sweet finish. Please enjoy the marriage of the taste of sweet potato and the rich, highly fragrant butter flavor unique to "Sugar Butter Tree".