Heat the oil and gently fry the onion in a large pan.
After 5 minutes add the spices and continue to fry for 2 minutes.
Add the rice and cover with the water.
Bring to the boil and then simmer for 20 minutes until the water has been absorbed.
Finally add the peas and cook for another 5 minutes.
Depending on the size of pan used you may need to add a little more water.
Drain off any excess water and serve.