2 ounces silver tequila
3/4 ounce orange liqueur (I use Cointreau)
1/2 ounce lime juice
more ice, crushed if possible
Cut the kumquats into quarters lengthwise and muddle in the bottom of a shaker. Muddle it well – 20-30 seconds to get the rinds really broken up.
Add ice cubes, tequila, orange and lime juice. Shake for 60 seconds.
Strain into a glass filled with crushed ice
To double the recipe:
4 ounces tequila
1 1/2 ounces orange liqueur
1 ounce lime juice