I am not at eating G20 Summit with the President and Celebrity chef Jamie Oliver but I did find the recipes.
You can also find more recipes from Oliver's website too
Here is the men I found
G-20 Dinner Menu
Organic salmon from Shetland, served with samphire (similar to baby asparagus) and sea kale, a selection of vegetables from Sussex, Surrey and Kent, and Irish soda bread.
Goat's cheese starter (Vegetarian)
Slow-roasted shoulder of lamb from the Elwy Valley in north Wales, with Jersey Royal potatoes, wild mushrooms and mint sauce.
Lovage and potato dumplings for the main course (Vegetarian)
Bakewell tart and custard (a traditional English dessert with an almond crust and jam filling).