Trousseau or Trousseau Noir, also known as Bastardo, is an old variety of red wine grape originating in eastern France. It is grown in small amounts in many parts of Western Europe; the largest plantations are today found in Portugal, where most famously it is used in port wine. It makes deep cherry red wines with high alcohol and high, sour candy acidity, and flavours of red berry fruits, often complemented - depending on production - by a jerky nose and an organic, mossy minerality.