When/how to add powdered buttermilk to CP soap : soapmaking
When I use powdered ingredients, I split my water pre-lye and mix the powdered ingredients in with the water I don't add lye to. Say I need 500g of water, and I also need 270g of lye - I will split the 500g of water into two jugs, one with 300g of water for the lye, and one with 200g of water for the buttermilk powder.