Have fresh herbs sitting around that will turn before they get used? You can freeze them in water or dry them out, but if you know you'll use them relatively quickly, you can add a few weeks to their life by freezing them in oil instead.
We've shown you how to make simply syrups with them, and how to use sea salt to dry them. But if you have some lovely herbs you don't want to go to waste, consider dropping them in an ice cube tray, filling up the cubes with olive oil (or any other oil of your choice, as long as it freezes nicely), and popping them in the freezer. When you're ready to fry some potatoes, for example, pop out a couple of rosemary oil cubes -- you'll need the oil for the pan anyway, and the rosemary will be right at home. Need some oil in a baking dish or crock pot for a few chicken breasts? Grab a frozen sage oil cube. The sky's the limit.
The only thing to note is that some herbs have a shorter shelf life when frozen in oil than in water (like garlic, for example), so this won't beat drying if you're looking to keep your herbs fresh for months and months. It will, however, work for weeks on end. And if you freeze them, pop them out of the ice cube trays and put them into zippered baggies, they'll keep even longer. Then the next time you need oil for a recipe, you can add a little flavour at the same time. Hit the link below for even more oil-freezing tips and advice on which herbs to freeze.
Freeze and Preserve Fresh Herbs in Olive OIl [The Kitchn]