by 
Christine
ANSWERS: 2
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It should last many months if refrigerated.
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When flavoring olive oils at home which you plan to keep for several months, you must be extremely careful to avoid botulism. What should I do to avoid botulism then? Well, bacteria will not develop on oil, but it can grow on water, so absolutely no water should be allowed into your oil. Because of this, you musn't use fresh herbs, garlic, lemon etc ... unless you're only infusing small quantities of oil, which you'll store in the fridge and use within a few days. Instead, use dried herbs to make any flavored olive oils you wish to keep longer than a week.
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