Bring a large pan of water to the boil. When boiling, add the brown rice and cook according to the packet instructions.
When the rice has been cooking for about 25 minutes, bring a little water to the boil in a smaller pan. Add the corn cobs and simmer for 10 minutes. Once cooked, drain, allow to cool a little, then cut the sweetcorn off the cobs.
When the rice has cooked, drain and return it to the pan. Add the sweetcorn and tinned tuna, including the oil and mix well.
Season to taste with salt and pepper, add the olive oil and serve!
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