Chunky Vegetable Soup is a limited starter dish. It was available from May 17 to June 6, 2011. It begins at level 0. To achieve level 10 in this dish, you need 10 carrot, 10 leek, 10 milk and 10 sweetcorn.
Getting Chunky Vegetable Soup to level 1 was part of the Let's Feed John! challenge (Eco Hero week) which adds a John Compost to your inventory.