I have no idea. Maybe you could look for reviews or comments from other manga readers who might have more insight into whether Fermat's Cuisine is a BL manga or not.
The honey bear bl manga is appealing because it creates a world that's both fantasy and relatable. The characters have complex personalities, and the stories can make you feel a wide range of emotions. Plus, the art can be really stunning.
Yaoi BL manga usually features romantic and intimate relationships between male characters. The art style is often detailed and the storylines can be quite emotional.