Loosely fill a jar with dried herbs. Leave two inches of space at the top of the jar.
Pour the oil of your choice over the herbs. Cover the herbs completely with an additional one inch of oil on top.
Cover with a tight-fitting lid and place in a sunny window. Room temperature is acceptable, but it's best to have warmth from the sun.
Shake the jar daily for three weeks.
At the end of three weeks, strain the oil through the strainer or cheesecloth.
Discard the herbs.
Pour the oil into an air-tight jar and label the contents and date.
Store in a cool dark place and use within three months.