This is a less sweet version of this recipe. It omits the rosemary which can get kinda lost in this recipe, but it won't hurt to add it.This recipe also omits the jam and instead uses marionberry vodka, which is a commonly found spirit in Oregon. Blackberry vodka or equivalent would be a close substitute.
1 oz. gin
1/2 oz. marionberry infused vodka
1/2 oz. St. Germain or other elderflower liqueur
Juice from 1/2 lemon (~1/2 oz.)
1-2 oz. club soda