The flowers! Cut them after a couple of sunny days, then dunk them in the dough and put in the pan. While the bottom is baking, cut off the five stems with a scissor or something, so you can flip it. Then flip it.
When done, sugar & cinnamon are a nice addendum.
I don't have my own tree yet, but I know all of them in my area π harvesting every year for this. Or jelly if I find enough. Made syrup once, but I can buy that all year too, so there is not much reason to produce my own.
