For each oil bottle:
Make sure all the ingredients you chose to use has either been dried, pickled or cooked so that there is no moisture left in them, otherwise they may not last as long as you would like.
To sterilise jar/oil bottles simply wash in hot soapy water, soak and leave to drain on a clean towel. Place them on a tray in an oven set to 140’C and put them in to dry out for about 40 minutes.
Place your chosen ingredients into the bottles and then fill up with good quality olive oil. Leave to marinate for at least 2 days before using.