Opal Martini is delectable quite strong cocktail at 1.7 standard drinks. Stirred with 45ml gin south coast and 15ml orange liqueur with 30ml orange juice as well as 10ml sugar syrup including 100ml ice and best at tea time. Just add ice to mixing glass then add ingredients to mixing glass and stir ingredients together until mixed. Hawthorne strain into glass and served in a martini glass cold.