Substitutes:

• Tequila: If you don't have Reposado Tequila, any other can of Tequila can be used to make this cocktail. You can also try using Mezcal for a smokier, more potent twist.
• Kahlua: If you're out of Kahlua, try using another coffee liqueur like Tia Maria or Espresso Borghetti.
• Mole Bitters: You can substitute them for classic Angostura bitters or chocolate/cacao bitters. If you don’t have any bitters on hand, you can simply omit this step.

Making a Pitcher of Brave Bull:

• Scale: To make a pitcher that serves 8, multiply all the ingredients by 8. That would be 16 oz of Reposado Tequila, 8 oz of Kahlua, and 16 dashes of Mole bitters.
• Mix: In a large pitcher, combine the Tequila, Kahlua, and bitters. Stir well.
• Serve: Pour the mixture into ice-filled Old Fashioned glasses, garnish with a lemon twist, and serve immediately.

Making it Non-Alcoholic:

• Tequila Substitute: Use a non-alcoholic tequila substitute; several brands are available that mimic Tequila's flavor quite well. Otherwise, you can use fresh orange juice as a substitute. You can also try making your own substitute by mixing together water, a pinch of smoked salt, a splash of tonic, and a bit of agave syrup (to taste).
• Kahlua Substitute: Opt for a non-alcoholic coffee-flavored syrup or make your own by combining strong brewed coffee with sugar and reducing it on the stove.
• Proceed As Usual: Use these non-alcoholic substitutes instead of the regular ingredients, follow the original steps, and enjoy a non-alcoholic version.

Making it Vegan:

• Kahlua Substitute: Regular Kahlua is not vegan as it contains sugar that may be processed with bone char. Opt for a vegan coffee liqueur, like Tia Maria, Espresso Borghetti (there are of course plenty of others).