Black salt is not a colour variant
Kala namak is pink salt kiln-fired with charcoal and botanicals, which changes its sulphur compounds and gives it the distinctive savoury, egg-like aroma. It is a different product with a different buyer — South Asian food manufacturers, chaat producers and, increasingly, vegan food brands using it to give plant-based dishes an egg character. Do not merchandise it as a decorative colour option; it tastes strongly and specifically.
