What group started the custom of presenting a young woman with cake having golden bean inside?

There is no historical record or tradition of a group starting the custom of presenting a young woman with cake containing a golden bean.

This practice likely doesn't exist as a widely recognized custom. It is possible you are thinking of a variation of a similar tradition, such as:

* The "bean in the cake" custom: This is a tradition in some cultures where a small bean, dried fruit, or coin is hidden in a cake. The person who finds it is considered lucky or will have good fortune. This practice has various variations and origins depending on the region.

* The "wedding cake with a hidden ring" custom: In some cultures, a ring is hidden inside the wedding cake, and the person who finds it is said to be the next to marry. This tradition is similar to the bean in the cake but specific to wedding celebrations.

It's important to note that cultural traditions evolve over time, and specific customs can be localized or unique to certain communities. If you have more details about the specific custom you're interested in, it may be possible to find more information.