How do you make the alcoholic drink called a Rusty Nail?

*2 oz Scotch *1 oz Drambuie Pour all ingredients directly into old fashioned glass filled with ice. Stir gently. Garnish with lemon twist or nothing at all. Note: Ounces may very but the 2-1 ratio is the key. Old-fashioned glass normal size: 8 - 10 oz. Also known as a Rocks glass An Old-fashioned glass is often used for: Drinks served "on the rocks" Chilled shots containing juices