Tech Tonic is pleasurable quite strong cocktail at 1.4 standard drinks. Stirred with 30ml gin sloe addingham and 30ml blueberry liqueur with 30ml tonic soda as well as 100ml ice and served before a meal to stimulate appetite. Just place ice into drinks mixing glass then pour all ingredients into mixing glas and stir well until mixed. Strain into glass and dress top with blueberries and served in a martini glass cold.