I haven't made soap in over a year, so to make up for it yesterday I made laundry soap (DeeAnna's method), liquid Castile soap (Irish Lass's method) and some soap using up random bits of oils that were cluttering up the cupboard.
I have a couple of batches made with seawater from 2017. I just checked them, and there is no sign of DOS and I live in a fairly humid climate. (They aren't wrapped). They did develop a soda ash layer, that washes off. Our water is so hard it is practically solid, so any soap creates scum. I...
I've used almond milk from a carton. It makes a nice soap, but I found it tricky to get to trace. It seemed to get nice and thick but separated. in the mould. It wasn't zappy, and rebatched okay, though it looks like rice pudding.