Hello, I'm new here but I thought I could share my experience with using baking soda. I went back and checked my notes and found the one for the BIGfoot Soap Cakes I made back on March 15, 2005. The recipe I used is posted below...i used OHP and the results were solid white hard cakes that were hand shaped like old school biscuits lol I added 1 tsp each of peppermint and eucalyptus essential oils. The suds were wonderfully creamy and there was minor exfoliation, but the scent faded (probably due to the baking soda).
Ok, the recipe:
31.2 oz Lard
12 oz Coconut oil
12 oz Tallow
7.7 oz NaOH
14.8 oz Water
2 Tbsp Baking Soda (added after cook)
1 tsp Peppermint EO
1 tsp Eucalyptus EO
I would suggest you try it and see if you like it
Karen