Haslingers comes in small diameter (60mm) hard pucks. I'm sorry I didn't stick lather with it before "affixing" it into a small tin. I'll bet it would have worked nicely. There stuff is amazing, BTW - at least the Schafmilch variety.Arko is hard to beat for the performance and price. I "did" enjoy a good Williams properly bloomed mug soap little more. Cella is up there as well. I know there are more luxury brands out there you can try if you want to spend the $. Been there, done that.
... Think