I am not sure about freezing and it affecting it's taste. But you can also store whole cloves in oil in the fridge. Olive oil will cloud up when refridgerated but if you add a bit of veg oil in there it should be less cloudy and won't thicken up as much as just olive oil does. You can just use veg oil as well I suppose. Then you also get a nice flavoured oil to cook with.
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