Not knowing what percentage of actual salt you used is, makes it hard to say. Part of your recipe is in percentage with the rest in either in grams or oz. I make salt bars with 90-100% salt using a recipe of 90% coconut oil, 10% castor. They lather great and only crumble if trying to cut them after a very long cure.I do cut my salt bar within 45 min, they are still quite hot when I cut. My salt bars do gel so they and do not acquire ash to badly, if I do not gel them they will form a very thick layer of ash that will roll of it you rub your finger across them. I have never used OO in salt soaps because I like a true high salt bar. In my opinion anything less than 40% salt is not a salt bar, just a hard bar of soap with less lather. JMO. A while back I had a vendor friend of mine go purchase a salt bar from a gal selling in my market that was labeled with OO, I could not tell any salt was in the bar and it did not lather well.