1¼ oz. gin 1½ oz. lime juice 2 dashes Angostura bitters -buy a portion this when you go to bar or a spirit shop.. not too expensive - really its cheap. ( if not - tis ok ) 1 tsp. bar sugar Sparkling water ( you can substitute 7up )
Directions:
Combine all ingredients except water with cracked ice in a cocktail shaker and shake well. Strain over ice cubes and pour into chilled Collins glass. Fill with water and stir gently. Serve with a swizzle stick.