In a large saucepan, over medium heat, melt the butter and add the chopped onions and celery. Cook until soft.
Add the stock, cream, and corn. Bring to a boil.
Add the rice, stir, lower the heat and simmer 15 - 20 minutes until the rice is cooked and the soup is thickened. Season well with salt and pepper before serving.
* This recipe calls for parboiled or converted rice. In the US, look for Uncle Bens Converted Rice, or Golden Canilla Parboiled Rice. In the UK, buy Uncle Bens Long Grain Rice (not quick cook).Substituting The RiceYou can use other types of long-grain rice (although I don't recommend instant, quick-cook, or brown rice). Just be sure to consult the package instructions for the cooking time and adjust accordingly.