I munged together several recipes for dandelion or other petals, dragons blood/skeeter pee and standardized for any petal I have. Some flowers will obviously be stronger flavors than others. Everything is essentially a sugar wine with nutrients and acid, so I figured out where I wanted to end up. I used 'white grape concentrate' from the wine store for part, NO raisins. A very neutral grape juice would probably work as well, since harvest is now/soon. Thompson Seedless, or one of the bulk wine sort of grapes. QA23, D47 or Cote des blanc yeast are what I settled on.