Chilli oil is perfect to give as a homemade edible present for use in salad dressings, stir-fries or on pizzas.
Gently warm the olive oil in a saucepan. Add the chilli flakes and whole chillies to the oil and heat for 3-4 minutes. Remove from the heat and leave the oil to cool slightly.
When the oil has cooled slightly, carefully pour it into sterilised, sealable glass bottle using a funnel. (Caution: hot oil can be dangerous.) Add the chilli flakes and dried chillies from the pan. Seal the bottle.
Keep the bottle in a cool, dark place, shaking the bottles once a week. As time goes on the oil will become redder and hotter.