Swapped Vodka for Bokma Oude, and it fixed the whole cocktail. The slightly oily mouth feel, the slightly nutty taste and aftertaste the oude jenever brings are all upgrades to the vodka in my opinion
Went full Oude Jenever (swapped the gin out for full Jenever) and it is wonderfull, even better than the original. Bokma Oude, Dolin dry, de Kuyper creme de cacao white.