Bison Tonic is beguiling strong cocktail at 1.3 standard drinks. Stirred with 45ml vodka zubrowka and 45ml tonic soda with 100ml ice and best at tea time. Just add ice into cocktail mixing glass then pour all ingredients into mixing glass and stir well until mixed. Strain into cocktail glass and harnish with lemon peel knot and served in a martini glass cold.