Pineau d’Aunis – a rare red wine from the Loire Here’s a riddle for you. Q: When is a rare red not a rare red? A: when it’s a Pineau d’Aunis. What is Pineau d’Aunis? Occasionally still called Chenin Noir, Pineau d’Aunis is a red grape grown in Touraine in the Loire valley of France. Said to be admired by …