Pickling Lime (Calcium hydroxide)
Also called builders’ lime, hydrated lime, and slaked lime, calcium hydroxide [Ca(OH)2] is an inorganic compound formed when calcium oxide (lime) is mixed, or “slaked,” with water. It is often used in food preparations such as making pickles or corn tortillas.
Pickling lime is one of the base ingredients for Michel Garcia’s 1-2-3 natural indigo vat. [LINK]
You can learn more about mixing a natural indigo vat and other natural dye techniques from our DVD, Natural Dye Workshop with Michel Garcia: Colors of Provence Using Sustainable Methods.