First, measure out your herbs and place in a clear glass jar.
Pour oil until it completely covers the herb, close the jar, and shake well. Place the jar in a sunny spot, such as a windowsill, and leave for 4-6 weeks.
After the infusion time is over, pour the oil into a muslin cloth, fine metal strainer, or use an herb press. Allow all of the oil to filter through and press or squeeze the remaining oil from the herbs.
Lastly, pour the infused oil into a dark glass bottle, label and store.