1 Preheat the oven at 230 deg C for 15 mins. 2 Cut the potatoes into wedges with skin on and place them on glass plate. 3 Microwave the poatoes on medium high for 2-3 mins. This will cook the potatoes faster. 4 Take a large bowl. Add potatoes, olive oil, rosemerry, grated garlic, salt and pepper. 5 Spread the potatoes on greased baking tray and grill it in oven for 20 mins until golden brown. 6 Serve hot with garlic-mayo dip. 4-5 tsp red chilli powder.