Great article Dave. It makes me want to grow luffas
I have never heard of "grey salt"
Why do you use grey salt?

I wondered that too. I buy salt at the organic food store and it is pink. But never heard of gray. Assuming he is referring to color, and not something else?

Yes the salt I like to use is gray. It's a mined and unrefined thing. I buy it from Amazon. I can't search for it right now but you should be able to find it there.

Ok, here it is:

https://www.amazon.com/dp/B000TIZP5I/

It's the Celtic Sea Salt, light grey. I buy it in 5 pounds sacks and that lasts us several years. They also sell it in 1 pound bags for $5. Well worth the price! It is loaded with trace minerals that aren't found in regular refined salt.

Now another salt I use for finishing (not cooking) is Fleur de Sel. https://www.amazon.com/dp/B000K6Z22U/ I love this stuff and can't get enough. I sprinkle it on buttered bread, buttered sweet corn, and stuff like that. Superb!

Now all these fancy salts come in pretty big grain sizes. You want a mortar and pestle handle so you can grind them down to the texture you want.

@dave Thank you so much for going to the trouble of posting the links. I am definitely going to try some