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Question: Why does using the Syrah grape variety usually result in a peppery wine?
Answer: The reason is because Syrah grapes contain ROTUNDONE – the same class of natural terpene compounds you find in black and white pepper corns! It is also found in some plants and herbs like oregano, marjoram, rosemary and others. Rotundone mainly from the grape skins provides distinctive aromatics that survive the fermentation process. Previously the peppery characteristics in wine were more pronounced from grapes grown in cooler wine regions. Now most wine regions are warmer and many are harvesting the grapes earlier. Wine tasters often find that same rotundone as white pepper notes in the “groovy” Gruner Veltliner variety.
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