Make a small batch of simple syrup and let it cool to room temperature.
Make fresh lemon juice. 1 lemon will be enough for one cocktail.
Add the ingredients into a cocktail shaker and shake for 30 seconds or more.
Strain into a martini or coupe glass and serve immediately.
Lemon Sugared Rim
To make a lemon sugared rim, pour 1/4 cup sugar in a shallow dish, add 1 tablespoon lemon zest and mix using your fingers to blend the lemon flavor and fragrance into the sugar.
Wet the outer edge of the glass, then dip it straight into the sugar to coat the rim!
Notes
Always use fresh lemon juice. Any vodka will work for this recipe; the better the quality, the better the drink.
Lemon Drop Mocktail
If you're looking for a non-alcoholic version of this cocktail, use zero-proof vodka or omit the vodka and add extra lemon juice and simple syrup to taste.