While searching for the recipe for a classic Sidecar, we came across this interesting variation. Made with vodka instead of cognac, it seemed more to our liking. We initially made it as the recipe stated, with equal parts liquor and lemon juice. It was delicious but overly tart and we found we really needed every bit of sugar on the glass. This updated recipe uses half the lemon, is still tart, but in better balance.
1 oz. Vodka
1 oz. Cointreau
1/2 oz. lemon juice
Shake over ice, garnish with lemon and serve in a glass with a sugared rim.