This tropical, bitter twist on a sour gets its twist with a healthy dose of Suze a bitter French aperitif. It works equally well with both gin and whiskey - so try both if you want to see how the two base spirits evoke different flavors from the Suze. If you need to, add a smidge more Suze here, but if you’re still learning to love it and the flavor of Gentian, leave the ratio lower, as it is here.