Step 1.
- Chill a cocktail glass by filling it with ice water.
Step 2.
- In a mixing glass, combine vodka and dry vermouth with ice.
Step 3.
- Stir well for about 30 seconds until chilled.
Step 4.
- Discard the ice water from the cocktail glass.
Step 5.
- Strain the mixture into the chilled glass.
Step 6.
- Garnish with a cocktail onion.