Thirstiest soap

What's the thirstiest soap you have encountered? Personally mystic waters stands out

B&M Reserve

Both of those are quite thirsty as is Mike's, L&L and Wholly Kaw donkey milk formula. I guess I like thirsty soaps then. That's pretty much my top 5 right there.

Wilkinson.

No matter how hard I try and that includes overnight soaking, it will not lather for me.
I even tried my Porky Pig brush - Nada.
Next - anyone make porcupine brushes?
But its blue plastic - oops, resin - tub is quite attractive.
I wonder if I imported some water from the Thames....

This is not intended as an insult, just a poke in the ribs to get them to do something about a problem.
I Like Wilkinson. I used their Protector Razor ( My beloved Red Blob ), the most ergonomic razor I have ever held, and their fabulous stainless blades, for 20 years.
I also admire their sage advice to wet shavers: "Keep a stiff upper lip."

Most of the tallow-based artisanal soaps that I have tried are quite thirsty:

Mystic Water
Mike's
L&L
Jabonman/Eufros
Shannon's
Tallow & Steel
B&M (non-Latha line)
Stirling

Barrister and Mann White Label
Mike's
Mystic Water
SV
Haslinger
L & L

B&M, Mike's, MLS, WK and L&L

B&M Glissant is pretty thirsty with Stirling right behind it.

I think most artisan soaps these days can take quite a bit of water... from the ones I have, I'd say B&M and L&L Grooming are probably the thirstiest.

In my experience none come close to PAA, Crown King, and Barrister's Reserve. No other soap in my den requires near as much water as those 3 soaps. I think Crown King tops the list out of those three. I'm sure there are others that I haven't tried.