Rob Roy Cocktail Recipe 3 mins 1 drink Bourbon & Whiskey, Other Liqueurs Ingredients 50ml Whiskey 15ml Vermouth 4 dashes Bitters Get all your USA cocktail ingredients at ReserveBar Affiliate link โ we may earn a commission at no extra cost to you. Directions Pourย all the ingredients in a tall glass with ice.ย Stir gently to combine.ย Strain into a martini glass and garnish with a brandy cherry.ย