G7 leaders were invited to join the Queen, along with other senior members of the family, for a reception before dinner Friday night.
Eden Project launched The Big Lunch in 2009, a charitable project which encourages communities to eat, volunteer and spend time together.
The charity will be part of the Queen’s Jubilee celebrations in 2022.
CNN has launched Royal News, a new weekly dispatch bringing you the inside track on the royal family, what they are up to in public and what’s happening behind palace walls.