The raspberry beret

A nod to Prince.  Just as much fun.

3/4 cup raspberry hibiscus kefir (I use Redeem brand; substitute similar raspberry soda if you prefer)
1 oz dry London spirit (I use Lyre's brand, which is non-alcoholic)
1 splash bay leaf simple syrup 
ice cubes
Garnish: fresh bay leaf

​Add to glass, stir, and serve.