Macron's recipe for fair-trade food

Sam Lowe, a trade expert at the Centre for European Reform, said that while rules relating to the standards of a final product — for example, on food safety — were "fairly well understood, the more tricky issue is rules around processing and production methods."

He said that while EU leaders could have some room for maneuver, these kinds of restrictions are "much more difficult to justify in a WTO-compatible manner" and largely dependent on how well the EU plays its trade cards.