Per 's Sidecar (se fx Bartenderens grundbog)
Sugar rim & lemon zest twist
SHAKE all ingredients with ice and fine strain into chilled glass.
[['4 cl', 'Cognac'], ['1.5 cl', 'Cointreau triple sec liqueur'], ['2 cl', 'Lemon juice (freshly squeezed)'], ['1 cl', 'Sugar syrup (65.0°brix, 2 sugar to 1 water rich syrup)']]
[['4 cl', 'cognac'], ['1.5 cl', 'triple sec'], ['2 cl', 'lemon juice'], ['1 cl', 'sugar syrup']]