"Thank you Michael and Sebastian, very helpful information. I should also mention that I'm actually tempering fudge, but I believe the points you both made still hold true for my purposes. I've only been using a marble slab, but…"
"I wouldn't overthink it to be honest. if you're tempering on a slab, you're using small quantities of chocolate. I've never done the math, but suffice it to say that i temper more than the average bear, and i've…"
There are two factors you want to look at when choosing a stone for this purpose: thermal conductivity and thermal capacitance. The first is the ability of the material to conduct heat (or cold), the second is the ability of the material to…"