Chop the onions and start softening in a large pan coated with Frylight.
While the onions are softening, chop the potatoes and cook until tender (about 10 or 15 minutes depending on your idea of bitesized!)
Meanwhile, peel your garlic and ginger (grating the latter) and measure out the dry spices.
Drain the potatoes, then add the oil, garlic and ginger to the onions for a minute or two, before tipping in the dry spices and stirring for two minutes more.
Add the tomatoes and coconut milk, bring to a boil and then tip in the potatoes and peas. Bring back to the boil, lower heat and simmer for 10 minutes.