Nueva York
Dried lime wheel.
Add all ingredients and shake vigorously without ice (dry shake). Add ice and then shake some more. Pour through a strainer to an old-fashioned glass filled with ice (cubes). Slowly add a float of sloe gin (recommended: pour it over a bar spoon). Squeeze orange zest over the glass. Enjoy. Repeat.
[['4 cl', 'Reposado tequila (100% agave)'], ['1.5 cl', "Hayman's Sloe Gin Liqueur"], ['3 cl', 'Lime juice (freshly squeezed)'], ['1.5 cl', 'Pasteurised egg white'], ['1.5 cl', 'Sugar syrup (65.0°brix, 2 sugar to 1 water rich syrup)']]
[['4 cl', 'tequila'], ['1.5 cl', 'gin'], ['3 cl', 'lime juice'], ['1.5 cl', 'egg white'], ['1.5 cl', 'sugar syrup']]