How to Make Beer Soap

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How to Make Beer Soap

I love that my husband and I share several interests together. Camping and hiking are at the top, but also simple living and the desire to be off-grid homesteaders one day. I also love that some of our independent hobbies overlap.

If you’ve followed me for any length of time you know I love DIY projects, such as soap-making. It seems to have rubbed off on my hubby a little bit because he has a few DIY hobbies, one of which is brewing beer. And we found a way to combine soap and beer! Beer soap!

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I won’t get into how to homebrew because I’m sure I’ll forget some important step and it’s actually quite lengthy but part of the process uses crushed grain. It is soaked in hot water for a specific amount of time allowing the water to pull the sugars from the grains. After it is soaked and “spent” there is a lot of crushed grain left over.

Instead of wasting the spent grain, we like to find creative uses for it. One way we use is to dry it in a dehydrator and then add to breads and baked goods for a unique texture. When we had chickens they would love to nibble on spent grains. I like to use a bit of it in soap.

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Using my basic Hot Process Soap making technique, I adjusted my recipe to include beer and spent grains. It turned out amazing! Very soft and soothing, with a slight soapy scent. The spent grain foliates to soften the skin even more. SO without anymore introductions here’s the beer soap recipe:

How to Make Beer Soap

Ingredients

Instructions

  1. Wearing proper protective gear, measure beer by weight into a heat proof bowl. In a well ventilated area (I go outside), add lye to the beer (NEVER pour liquid into lye). Stir carefully to incorporate the lye into the beer. It will get very hot. Let rest while you work on the oils.
  2. Measure each oil and add to a large slow cooker. (Sometimes I will melt the hard oils/butters in the microwave to speed up the process.) Once the oil is melted, carefully add lye/beer mixture. Stir to combine.
  3. Using an immersion blender, mix soap together until it reaches trace, a pudding-like texture. Cover and cook on low for at least an hour. It will thicken and bubble strangely. At this point you can stir in the spent grains. This will add an exfoliating texture. Add more or less depending on your preference. You could also grind the grains into a finer texture if desired.
  4. Pour soap into a mold lined with parchment paper, a loaf pan works great as a mold! Nestle the mold into a cardboard box and cover with a towel. Place in a safe location to set. After a day or two, remove from mold and slice into desired size bars. The bars store best standing up without touching in a cardboard box.
http://neverlackingzeal.com/2016/02/02/how-to-make-beer-soap/

You can find a photo tutorial of the hot process method on my original soap making post here. You can also add scent to this recipe at trace. I like to add scent with essential oils.

Beer soap is very gentle on the skin. If you leave out the spent grains it would make a great shaving soap.  Pair this soap with an old fashioned shave kit and you have an excellent gift for the man in your life.

beer soap

Have you ever made beer soap?


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11 thoughts on “How to Make Beer Soap

  1. Could I use old fashion oatmeal instead of spent grains? And what essential oil would be good to use with this recipe?

    1. Oatmeal would be great! If you go the oatmeal route, lavender, rosemary, or anything soothing would be nice.

  2. How large of a batch does this make? I want to make sure my slow cooker (12 quart) is large enough and that I prep enough loaf pans (I have 2 9X3 pans). Thanks!

    1. This recipe is for a 2 lb batch. A 12 quart slow cooker is plenty big! I believe mine is a 6 quart.

  3. Just to clarify, are your measurement above all by weight or by volume? Some people post lye as by weight but oils by volume. Just want to double check before making so I don’t ruin a batch! Also, do you get much beer scent or a change in beer scent if you try different beers? For example, does a stout have a stronger beer scent compared to something lighter, like an IPA, or is it just the scent from the spent grains?

    1. All measurements are by weight. I found it was easier to do it that way and had more consistency. I did not notice a beer scent with the final product but it would be fun to play around with different beers to find out!

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