Lemon Drop Martini Recipe

Lemon Drop Martini

1 1/2 ounces vodka
1/2 ounce orange liqueur (Triple Sec, Grand Marnier, Cointreau, etc.)
1 teaspoon sugar
3/4 ounce freshly-squeezed lemon juice
Ice cubes
Superfine sugar for dipping
Twisted peel of lemon