Instructions:
 

These are instructions to make a 5 pound batch of soap in a 750 watt microwave oven.  Cooking times will vary.  You may use any soap recipe you choose.  I have had success with all of my usual cold process recipes.  Check back for a recipe page (coming soon).  Send me your own original recipe, and I'll post it on the page.

 

 
  1. Weigh out all of the oils, and the lye.
  2. Heat oils either in the microwave (about 3 min), or on the stove until they are lukewarm (about 100 degrees farenheight)
  3. Add the lye to the water, and stir until all the lye is dissolved.  I do this while the oils are heating
  4. Add the lye water to the heated oils, and stir until the mixture thickens and looks like pancake batter.  This stage is called trace.  I find that using a stick blender saves a lot of time in this step.  You can find hand blenders at your local discount store for about $10.00, or at a thrift store for about $3.00.  I highly recommend using them.  I can get almost any batch of soap to trace in less than 10 min. with a stick blender.
  5. When the mixture is traced put the soap in the microwave and cook it on medium power for 2 minutes, checking after every minute.  After two minutes the soap may still look the same, or it can be considerably thicker.  I find that the soap doesn't really start to do anything for at least 5 min, but I stir it every minute so it cooks more evenly.
  6. Continue to cook the soap, stirring every minute or two.  Cooking times vary from oven to oven.  I find that cooking all batches on medium heat helps to prevent separations and climbing.  I cook it on medium power for at least 5 minutes, and then turn it up to high for the last few minutes.  
  7. After about 7 minutes the soap tends to try to climb out of the pot.  It is often necessary to check on it every thirty seconds.  Stir down any foam, and continue cooking.  The soap should look like applesauce when you stir it.  As it cooks the grains slowly start to stick to one another, and the applesauce gets lumpier.
  8. You may notice the soap trying to separate (the applesauce will look oily on top).  If that happens stir it back together, and continue cooking.  I find that the oil is absorbed during the cooking process.
  9. After approximately 15 minutes have elapsed, the soap sometimes goes through the "champagne bubbles" stage.  The champagne bubbles stage is when the soap tries to climb out of the pot even when you are stirring it.  I generally have to take the soap out of the oven and stir the bubbles down three or four times before they stop climbing at this point the soap is generally done.  I like to put the soap back in the oven for 30 seconds to cook out some more of the water.
  10. When the soap is done it will be a thick, cohesive mass.  The overall texture should be smooth and gloppy, and somewhat translucent.   If the soap looks like mashed potatoes you have probably over-cooked it.  The soap is still usable, just harder to mold.  If you take some soap out of the pot and it hardens to a wax-like consistency it is done.  I do a pH test of the soap just to make sure.  There are several ways to test the pH of a soap.  I taste the soap to see if there is a lye tingle.  To do this, take a small amount of soap out of the pot with a clean spoon.  Allow the soap to cool slightly, and touch the tip of your tongue to the soap.  If the pH is too high the soap will tingle on your tongue.  If the soap pH is good, it will just taste like soap.  Be careful using this method.  You can burn your tongue.  pH strips are available at restaurant supply stores, or online.  They are a much more sane way to test your soap.
  11. Add  scents and coloring, and glop the soap into a prepared mold.  Tap the mold on a firm surface to release any air bubble and smooth the top.  
  12. Allow the soap to cool for several hours, and cut into bars Need more help?
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Copyright 2000,2001 Karen Stark