Effect: Your character can discern the subtle nuances in blood and Vitae. Consider any Taste of Blood roll (see p. 91) an exceptional success with only a single success.
Drawback: When taking this Merit, choose a preferred feature in a vessel that comprises no more than one-tenth of the population. This may be a hair color, a blood type, or even a drug in his system. When feeding from any other mortal source, ignore the first point of Vitae ingested in a given scene, as nothing sates your character like her preferred meal.