1 1/2 oz gin (I went with an American style gin -- @fourcornersgin -- rather than a juniper bomb)
3/4 oz Ume plum liqueur (@drinkume)
1/4 oz crème de violette
3/4 oz fresh lemon juice
1 tablespoon blueberry jam
simple syrup to taste
fresh mint for garnish
Combine all ingredients except mint and shake well with ice. Fine strain over crushed ice and garnish