How To Make Rosemary Essential Oil

Trying to improve your memory, so that you can improve your test scores, 
instantly be able to recall names and faces, or just find your car-keys? Then it 
may be time for you to learn how to make Rosemary essential oil.
Essential oils are stored in the cells of the plants. In the case of Rosemary, these 
pungent oils are in the quill-like leaves. Some plants just seem to be generously 
bursting with fragrance, and Rosemary is one of them. Simply pinching a cluster 
of these narrow, dense leaves, which feel similar to pine-needles, will give you 
an instant burst of the distinct and refreshing aromatic. By contrast, a water-
loving plant like Jasmine requires many, many hundreds of pounds of fast-fading 
flowers to produce just a few drops of essential oil. As a durable native of a dry 
climate, the concentration of oil is very high in the bushy leaves of the Rosemary 
plant. The aroma is so strong that it is subtly detectable in the honey produced 
from the tiny blue-gray flowers of Rosemary. It is also an iconic fragrance and 
flavoring in classic, traditional dishes of Greece and North Africa, particularly 
roasted lamb. 

If you want to cultivate your own plants as the first step in how to make 
Rosemary essential oil, you’ll be pleased to know that this aromatic plant 
is sun-loving and easy to grow in pots on a deck or balcony. Keep in mind 
when considering how to make Rosemary essential oil that the oil needed 
for cooking differs from aromatherapy oil. If you simply want to add Rosemary 
flavorings in your kitchen, you can add sprigs of Rosemary to a bottle of olive oil, 
or add dried or fresh Rosemary leaves to kosher salt as a rub for meats.
The sharp, clean fragrance of this hardy Mediterranean shrub has been 
scientifically proven to improve memory retention, a belief which has been 
anecdotally held for literally centuries. Essential oil of Rosemary is considered a 
tonic and astringent by aromatherapists. It is used to reduce nasal and lymphatic 
congestion, as well as a mild analgesic to ease muscular pain. And it’s also 
antibacterial, and a great base for making eco-friendly cleaning supplies.
Once you know how to make Rosemary essential oil, you’ll be able to tap 
into these benefits, among others, even if you don’t have the luxury of living 
Rosemary plants at hand.
A key method in the exploration of how to make Rosemary essential oil is the 
technique called expression. Expression of essential oils requires distillation by 
either water or steam. In fact, the process closely resembles that used in the 
mountain distilleries or stills used by moonshiners!
Water Distillation
The plant material is immersed in water and boiled. The steam and the essential 
oils rise out of the hot water and are then cool, producing condensation which is 
collected. Two products are created here-- the essential oil and the condensed 
water, which contains water- soluble essences of the plant material. These 
floral waters are called hydrosols. Water distillation can be done under vacuum 
(reduced) pressure, which allows the temperature to be kept lower than boiling. 
This helps to protect and preserve some of the more delicate plant materials.
The simplest distillation method is a simple water distillation. 
Steam Distillation: 
essential oils, uses a very similar setup to water distillation, except instead of 
being immersed in the hot water, steam is passed through the plant material. The 
steam breaks open the cells containing the essential oil, and the steam and oil 
then pass into the cooling chamber where, as with water distillation, two products 
are created : essential oil and hydrosol.
Steam distillation, the most common method of extracting 
If you’re looking for a simpler technique when it comes to how to make 
Rosemary essential oil, as just a basic infusion versus a distillation, here’s what 
you’ll need:
• 1 cup fresh Rosemary
• 2 cups oil
• Slow-cooker
• Strainer
• Bowl
• Small sealable glass container – sterilize jar and lid by boiling for 5 minutes, 
then allowing to air-dry
Start by removing the Rosemary leaves from the stem, and measure one
cup to use for making the infused oil. Just plucking the quills from the stems will 
make your kitchen smell wonderful. And yes, you can also use dried Rosemary 
although the aroma will not be as complex and delicious. Use any type of 
carrier oil for the simmer, but a high-temperature, low-scent oil is best, such as 
sunflower or safflower oil (versus more aromatic and volatile olive oil). Measure 
and add two cups of the oil to the slow cooker. Set your slow cooker to “low”, 
add the Rosemary leaves, turn gently with a wooden spoon a few times (metal is 
too reactive), and let warm for six hours. Turn off the heat after six hours. Allow 
the warm oil to cool in the slow cooker for an hour, and then strain over a bowl. 
Seal the jar and keep in a dark place—it’s perishable. As an alternative extraction 
method, place the Rosemary-and oil-filled glass jar on a sunny windowsill and 
allow to steep for at least a week, then move the finished oil out of the direct 
sunlight. Enjoy in a warm bath, as a massage oil and as a hair conditioner!