Rinse the bottle / s carefully with hot water and let it dry!
Heat the oil, but do not bring it to the boil. Put the peeled and possibly chopped (depending on the size of the bottle neck) garlic, the chilli flakes and the peppercorns into the bottle / s and pour on the warm oil! Close tightly and let steep for about 7 to 10 days, with occasional shaking.
Now strain the oil and pour it into a clean bottle.
Tastes great for marinating meat and fish, but also delicious with fried vegetables. It also goes very well with salads if you like garlic!
It is also a nice and tasty gift idea with a whole dried chilli pepper and a few peppercorns