The EU has a ton of regulation on foods to protect that. Regional products generally have to made in a specific way in that specific region. Through the EU such

The EU has a ton of regulation on foods to protect that. Regional products generally have to made in a specific way in that specific region. Through the EU such products are better protected than any single country could on its own. Pooling these interests within the EU also means enforcing these things through free trade agreements on a larger scale still, so that nobody in Canada (CETA) or the US (TTIP) can produce Champagne for example.