Rhuld-Fashioned

Combine the sugar cube, listed 0.5 oz rhubarb bitters and splash soda water in a lowball glass. Add the orange wedge and muddle into a paste. Add the whiskey and maraschino liqueur, fill with crushed ice, then add the listed lime juice, lemon juice and simple syrup portions as a 1:2:2 sour mix. Stir and finish with the selected optional cherry.