Rosemary Lemongrass Soap


Rosemary and lemongrass are my two of my favorite scents. I wanted to create a soap that included both of them, and I loved the end result! This soap is uplifting, energizing, and makes me think of summer and happy things. The perfect soap for the middle of winter when we are longing for warmer days.


For this recipe, I went to the SoapCalc Lye Calculator, and entered in the oils I wanted to use, the superfat, the size of the recipe and it gave me all the info I needed to make my soap. For more information about this process,  please visit my first soap making post Lavender Rosemary Soap.


After I printed out the recipe, I processed some dried rosemary from my garden. I wanted small flakes in the soap so I stripped the rosemary leaves off the stem and ground it into a rough powder in my coffee grinder that I use only for herbs.


I wanted the soap to be a muted yellow so I added in some turmeric as well to be added at the end with the rosemary. I was hoping for a muted yellow looking bar of soap.


Then I measured out my essential oils. Between soap making, medicine making, and cooking I use my scale A LOT! I think everyone should have one of these in their kitchen. A scale and a hot water kettle are kitchen essentials in my book :).


Once my add-ins of herbs and essential oils were ready,  I measured out my oils and let them warm slowly on the stove.


Finally, I measured out my water, then my lye and mixed them together.

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While I waited for the lye and oils to reach roughly the same temperature I staged everything else. I got my molds ready and set up my immersion blender and add-ins.


This is what it looks like right after adding the lye to the oils.


The immersion blender does a great job of blending the soap, and it quickly started to emulsify and thicken.


Then I added in the turmeric, rosemary and essential oils… and freaked out! It turned carrot orange. Not what I was envisioning. But, there was nothing I could do at that point, so I blended some more until it was thick and poured it into my molds.


If you remember from my calendula buttermilk lavender soap post, parchment paper is not enough to keep the lye from damaging the aluminum pan. I probably should have googled that… live and learn. So, I have two cake pans with mottled spots on the bottom. But now I know, and you know better.


After it sat for 24 hours I peeled off the parchment and cut it into bars, and popped the other bars out of the silicone mold.


Believe it or not, the orange toned down a lot. It turned out the perfect creamy yellow color exactly like I wanted! Now we know when using turmeric for natural coloring, the original color is darker and more orange than the final product.



Rosemary Lemongrass Soap

30% Coconut Oil

30% Olive Oil

35% Tallow

5% Castor Oil

5% superfat


1 tablespoon of ground rosemary per pound of oils

1 tsp of turmeric per pound of oils

Essential oils (based on 2 pounds of oil):

25 g lemongrass essential oil

20 g rosemary essential oil

10 g sweet orange essential oil

Run oil amounts through Soapcalc to figure out your final amounts of lye, water and oils. Measure out essential oils, rosemary and turmeric.

Measure out your lye and water and mix. In a heavy bottom pot measure out your oils and melt them over low heat. Once your lye mixture and oils are about the same temperature add them together and blend with an immersion blender until they reach a light trace. Add in turmeric, rosemary and essential oils and blend some more with the immersion blender until everything is incorporated really well and the mixture thickens. Then pour into mold(s).

Let it sit for 24 hours. Then unmold, cut and let cure for 4-6 weeks.

Hope you give this soap a try!

Don't be shy, leave a comment and let me know what you think!

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