Black Zone is delish very strong cocktail at 1.9 standard drinks. Stirred with 30ml blackberry liqueur and 30ml vodka black with 20ml sambuca black and had with salad dishes. Just warm liquieur glass then warm mixing glass and heat cubes and pour all ingredients into mixing glass. Stir well and strain into warm glass and drinks well with a warm dougnut and served in a liqueur glass warm.