Shake all ingredients except Topo “dry” to emulsify before adding ice. Add ice & shake again until chilled. Strain into cocktail glass. Top with splash of Topo Chico. Can also be made without the Topo Chico and/or egg white.
Add Pisco, lime juice, syrup, & egg white to shaker. Dry shake (without ice) vigorously for 30 seconds. Add ice & shake again. Strain into coupe glass. Spray or dot Angostura bitters on top as artistically as desired!
If using an egg white, shake all ingredients vigorously without ice. Add ice and shake again. Fine strain into a coupe glass or a rocks glass filled with fresh ice. Garnish with strawberry, lemon, and/or basil leaf.