RositaBy The Cocktails Must FlowThe Rosita is a Negroni variant of unknown origin, but it first appeared in print in the 1974 edition of the Mr. Boston Official Bartender's Guide; the recipe we used is an adaptation by Gary "Gaz" Regan who upped the tequila and added bitters.Left HandBy The Cocktails Must FlowThe creator of this cocktail, Sam Ross, has described it as “a love child between a Negroni and a Manhattan.” Essentially a Boulevardier using bourbon instead of Irish whiskey and with different proportions and the addition of chocolate bitters.Banana BoulevardierBy The Cocktails Must FlowA variant of the Boulevardier, created by Terry Williams in 2016 at Anvil Bar & Refuge in Houston, Texas, USA.Old PalBy The Cocktails Must FlowA 1920s variant of the Boulevardier from Harry McElhone which uses rye whiskey.Irish BoulevardierBy The Cocktails Must FlowA variation of the Boulevardier , itself a variation of the Negroni, which switches out the rye whiskey for Irish whiskey.BoulevardierBy The Cocktails Must FlowThe Boulevardier is a variation of the classic Negroni which swaps out the dry gin for a little more bourbon or rye whiskey.