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| Love that golden orange color. It’s prettier in real life. |
So finally I get around to finishing off this mini series on Calendula (pot marigold). This post will be on infusing oil, and next week we’ll have the one on salves.
We’ve already covered the growing and drying Calendula:
Oil infusion is as simple as can be. Oil infusion is soaking. Think of it like making sun tea. You take a nice clean jar with a good lid, and fill that about half way full of dried herb, top it off with oil, and let that sit in the sun.
The resulting oil is medicinal. It can be used straight on the skin, or fashioned into salves and balms. I’m particularly fond of Calendula. As a skin treatment it displays regenerative properties, making it really helpful for healing dry, scraped up, or otherwise damaged skin.
But lets step backwards a bit and talk about materials.
Your herb–Calendula or anything else– should be dry when you start this. It should crumble between your fingers. If there’s any flexibility to leaf or flower, that means there’s still water in there. The reason you don’t want water in there is that spoilage in oil infusions usually comes about because of the presence of water in the plant material. Spoilage can result in anything from off smells to mold to–worst case scenario–botulinum toxin in the oil.
Now, to be sure, I know folks who infuse fresh herbs in oil, and they’re not all dropping dead. This is like the prohibition against infusing oil with fresh garlic cloves. Garlic oil tastes really good, and lots of people have done it for a very long time, but, theoretically, bad things can happen because of the water in the garlic (i.e. botulism), so it’s not recommended by the Powers that Be. So it’s up to you–I’m just not going to encourage it.
Regarding Calendula specifically, you can soak either the petals alone, or the whole flower heads. Either way is fine. Just make sure the green part of the heads is truly dry.
Your oil doesn’t have to be super high grade. I use un-virgin olive oil–not the lowest, motor-oil sort of grade–just something a little more experienced than extra virgin. This is also a matter of preference. You can use organic, cold pressed, locally sourced extra, extra virgin oil, for sure. It’s just an expensive proposition. Since I make these oils in quantity, I use the less expensive oil and save the good oil for salads.
It doesn’t have to be olive oil, either, but it should be something good for the skin, like jojoba oil or grapeseed oil. I don’t recommend common cooking oils, like corn or canola. Some people infuse into petroleum jelly (making insta-balm), but that makes me shudder. I’ve not tried infusing coconut oil, but I imagine it would work great.
The Soaking
All you have to do is fill a very clean jar with a good lid about half way full of dried herb, then top it off with oil.
If the herb you’re using is very fluffy, and as a result has a lot of air around it–imagine a jar of dry chamomile buds, for instance–you can fill the jar almost to the top with dried matter.
This not an exact science, so don’t get worked up about exact quantities. The only thing you should keep in mind in terms of measurement is that you’ll get less oil out than you put in. The herbs soak up a good bit of the oil, and don’t give it all back. Also keep in mind that you don’t need to make a ton of this stuff unless you’re planning on selling it, or doing a big Christmas project. Salve stretches a long way. A jam jar–the kind that holds 1 cup–is not too small for an experimental go at this.
Now wait
Cap the jar tight and let the plant matter infuse in oil for about a month. The best place is in a sunny window, where it gets some heat and light. Very gentle warming is the idea. You can take your jars outside when the weather is good. When the sun is hiding, I’ll put my jars on the stove top, where there’s constant warmth from the pilot light.
Give the jar a shake every now and then.
There are other ways to do this. Some people simmer on the herbs and oil on the stove top. I avoid this because plant essences are so delicate and heat sensitive. A crock pot is more controlled, but I don’t have one of those. In Making It I wrote about a technique involving alcohol, the blender, and the stove. It’s tricky, but it will yield finished oil fast. But here at home, I like the simplicity of the long soak. It doesn’t take any energy, and hardly any attention.
Harvest
Above I said about a month–that’s loose, because again, it’s an inexact science. I’m sure you’d have something useable in a couple of weeks, and I will confess I’ve often forgotten about my oils and left them more than a month with no ill effects. 3 to 4 weeks is ballpark.
Strain the oil from the dried matter. I used to do this very, very carefully with a tea strainer or with a muslin bag. Now I have the blessed canning funnel. I line that with various strainers, depending on how clean I want the oil. I have a fairly loose strainer that’s good for big stuff, like Calendula blossoms. Tea baskets fit in there as well. And for very fine straining I can line the strainer with cheese cloth or muslin.
Strain the oil into a fresh, clean jar. Pour off the oil first, then press the dried matter to squeeze out the remaining oil as best you can. You’ll never get it all back.
Label it
Make sure you label it with the type of oil and the date it was made. Believe me, even if you only make one jar, you’ll forget what it is and when you made it, and a year later you’ll be standing at your cupboard, puzzling over it.
Store
Store the oil in a dark place. Use it up within a year, the sooner the better, to take advantage of the Magick Herb Power.
Of course you should not use oil that smells rancid or looks funny. Smell your herbs and oils as you’re working with them! If you’re familiar with them, you’ll know easily that they’ve gone off.
Don’t throw away old or even rancid oil, by the way. Burn it in oil lamps. That’s a whole ‘nother project that we should cover here. It’s the first project in Making It.