Yeah, don't eat these oils, I think they are for external use only. I know basil sometimes carries a fungus that can make oils go bad, but garlic is an antibacterial, so it shouldn't do that.

Botulism is definitely a probability, especially with garlic and chillies in oil. Herbs should be completely dried before using them for herbal oils. So I've read. Meantime, the 'approved' methods for herbal oils are as follows. For cooking, I'd use all of them within a day or two, then leave them for external use only.

Cold Infusion Method: Combine herbs and oil. Pureed herbs disperse their flavor more quickly but are not as aesthetically pleasing. Use with in 2-3 days. Store in the refrigerator at all times.

Warm Infusion Method: In a saucepan, combine herbs and oil. Heat to a simmer, reduce heat slightly and cook just below simmering for 15 minutes. Remove from heat and strain through several layers of cheesecloth into a sterilized glass jar. Label with the date and refrigeration instructions. Store in the refrigerator at all times. Use with in 1 week.

Oven Method: Place oil and chopped vegetable or herb in a 2 cup glass measuring cup. Set cup on a pie plate and place in a 150C oven for 1 hour. At the end of heating, the vegetable pieces should be a medium brown colour and crisp. If not, continue baking until they turn brown. Remove cup to a rack to cool for 30 minutes. Line a small strainer with a coffee filter or several layers of cheesecloth. Strain oil into a clean glass jar, cover and store in refrigerator at all times. Use within a month.

Oh - thanks for the info. I was intending to use it only for external huse, so that's ok. Thanks.