Archana from Lucknow UP, India writes:
"I want to know what is difference between rack salt and black salt
"You mean rock salt, not rack salt, yes? Rock salt is mined from the earth as opposed to sea salt which comes from the sea. Black salt, kala namak is a variety of rock salt mined in Bihar Province from volcanic deposits, hence the sulphur flavour.
For more on black salt....
And if you care for a little more than just black salt...
Posted by Kurma on 17/5/08; 10:16:36 AM
from the dept.