The Bourbon Blanchul Anno Imo biscuit is a Japanese confection produced by Bourbon Corporation, renowned for its innovative snacks. This particular treat features a crispy langue de chat (French for "cat's tongue") cookie enveloping a creamy filling made from Anno sweet potatoes, a variety celebrated for their natural sweetness and rich flavor. 

The Anno sweet potato, primarily cultivated on Japan's Goto Islands, imparts a distinctive taste to the biscuit, harmonizing the subtle sweetness of the cookie with the rich, earthy notes of the sweet potato cream. 

These biscuits are typically available in packs containing multiple individually wrapped pieces, ensuring freshness and convenience. They are often enjoyed as an accompaniment to tea or coffee, offering a delightful blend of textures and flavors characteristic of Japanese confectionery.

For those interested in trying the Bourbon Blanchul Anno Imo biscuits, they can be found through various online retailers specializing in Japanese snacks. Availability may vary depending on your location, so it's advisable to check with local Asian markets or online stores that offer international shipping.

In summary, the Bourbon Blanchul Anno Imo biscuit combines traditional Japanese ingredients with Western confectionery techniques, resulting in a unique and flavorful treat that reflects the rich culinary heritage of Japan.