A delicious recipe for Highland Cooler, with Scotch whisky, Angostura® bitters, lemon juice, powdered sugar and ginger ale. Also lists similar drink recipes. Ingredients:1 oz Scotch whisky2 dashes Angostura® bitters1 oz fresh lemon juice1 tsp powdered sugar4 oz ginger ale Method:Pour the Scotch whisky, Angostura bitters, orange juice and sugar