Which is the yellow flowered herb used for flavouring?

There are several yellow-flowered herbs used for flavoring, so I need more information to give you a definitive answer.

Could you please tell me:

* What kind of cuisine is the herb used in? (e.g. Italian, French, Asian, etc.)

* What is the herb's flavor profile? (e.g. sweet, bitter, peppery, citrusy, etc.)

* Is it commonly used fresh or dried?

Once I have this information, I can narrow down the possibilities and give you a more accurate answer.