Cut potatos into smallish chunks and boil them for 4 or 5 minutes in salted water, they should be very firm and only slightly cooked. Drain the potatos and rinse with COLD water. Heat frying oil to 160 °C and fry for 5-6 minutes, or until they are cooked, not crispy. Turn heat up to 190 °C and fry until golden and crunchy. In a deep skillet with a good lid (I use a wok) heat the olive oil. Fry onions untill they have wilted on a high heat, then turn down the heat and cover. Peel your garlic (bash it with the flat of a good kitchen knife and"top'n' tail") and chop into smallish pieces (if you'r going to serve this to kids put it through a food processor, if you like garlic just cut it into rounds). Add to the onions and turn the heat up again. Chop your red chilli pepper very very carefully