DIY Infused Olive Oils. Read up on safety first. Commenter wrote: Please be careful with your oils. Botulism can grow where any water is present. Garlic (more common) lemon peel, and any fresh herbs are at risk. To avoid any chance, refrigerate and use within a week. Other methods are using dried OR preserved herbs/garlic (vinegar or brine) and just adding oil (or heating oil) together.
INFUSED OIL! Completely dry & sterilize a bottle. Fill 1/4 of the way with spices and/or dried herbs (any amount of water can cause oil to go rancid) Top with oil, allow infusion for 2-4 weeks or simply leave in herbs to continue to strengthen flavor. Store in fridge once ready and use within 1-3 months (mountainroseblog.com)