The palo negro, from ivy mix at leyenda, is a masterclass in balance and proportion. Careful measurement is a must but the payoff for your patience is a rich, harmonious choir of deep flavors and scents. Mix calls for lustaus palo cortado sherry, a medium-bodied type that you could substitute with a dryer amontillado or a sweeter oloroso. Just stay away from bone-dry finos or syrupy-sweet pedro ximenezes or cream sherries. For the dark rum, mix calls for a blackstrap rum, specifically cruzans. Its a spicy, rich rum that provides much of the flavor and backbone of the drink, so be judicious if making a substitution. Regular dark rum wont cut it here you need something with a little extra bite to it.