Hello.
I'm pretty new to soap making and am using a hand-me-down cold process recipe my parents used to use for their soap making busniess.
My first batch seized as I added to fragrance at trace. So I tried again and this time added the fragrance (which was honey oil) to the melted oils before adding the lye (both at 100 degrees f) It all went really well, no seizing and it poured like a dream into my shallow mould. I insulated it and after a week turned it out. I noticed the centre of my flat block was a darker circle, whist the edges where a lot pailer. Even so, it seemed fine and cut nicely.
I left it another week to dry and thats when I started to notice the problem. The back of my soaps (which would have been at the top of the mould as it was setting) had turned white, and the parts of the soap that where closer to the centre of the block, the darker parts of the soap, were a bit crumbly. The outter edges of the soap are PERFECT! I'm going crazt that I've managed to make half a great bar and half a bad bar, haha.
Just to give a bit more information, I made a very small batch, just enough to fill one shallow mould. Is this a heat issue maybe?
Herewith pictures to show what I mean - this is a single bar of the same soap in all pics.

Inside edge

Another inside edge

An outside edge (just how I want it!)

The other outside edge, again, just as I want it.

The bottom, that park exposed to air in the mould.

The top of the bar. Ignore the crumbs, this bar was in a carrier bag with all the other soaps and the crumbly bits stuck to it. The top is really good, just how I want it.
Taste test comes out A-OK, it washes wonderfully, makes a lovely lather and leaves a mild fragrance on my hands. I'm so close, I just want to nail this ugly crumbly problem.
Thanks people, I really hope you can help me. I'll be eternally greatful
