Ice, Water
Martini Glass or Coupe
Fill glass with ice, fill to top with water
Chill for 5minutes

2oz Gin
1oz Dry Vermouth (maybe: Dolin Dry de Chambery)
Ice
Mixing Glass
Stir vigorously in mixing glass, 15 seconds

Discard water and ice from chilled Martini glass
Strain from Mixing Glass into Martini glass

Lemon twist
Garnish