Which varieties of red wine contain the highest levels resveratrol?

It's not about specific varieties, but rather the skin of the grapes. Red wines contain higher levels of resveratrol because the grapes are fermented with their skins, allowing the resveratrol to leach into the wine.

However, some factors can influence the resveratrol content within a red wine:

* Grape variety: Some varieties naturally have higher resveratrol levels in their skins than others.

* Growing conditions: Soil, climate, and other environmental factors can affect the resveratrol content of the grapes.

* Winemaking techniques: Techniques like extended maceration (longer time with skins) or using specific yeast strains can influence the extraction of resveratrol.

Therefore, it's difficult to name specific red wine varieties with the highest resveratrol levels.

Here's what you can do to increase your chances of finding wines with higher resveratrol:

* Look for wines made with grapes known for their thick skins: This includes varieties like Petite Sirah, Cabernet Sauvignon, and Syrah.

* Choose wines with an "organic" or "biodynamic" label: These wines are often made with less intervention, which may lead to higher resveratrol levels.

* Select wines with a darker color: The color of the wine can be an indication of how long the grapes were macerated, which can affect resveratrol levels.

Remember, even though red wine contains resveratrol, it's important to enjoy it in moderation as part of a balanced diet and lifestyle.