Offline is delectable very strong cocktail at 2.1 standard drinks. Stirred with 30ml rum 151 proof lemon hart and son and 10ml bitters grapefruit with 60ml cola soda ice as well as 190ml ice and best with morning tea snacks. Just fill gass with ice then add ingredients to mixing glass, bitters last and dry stir well without ice. Pour into glass over ice and served in a highball glass cold.