Indigo Dye. Indigo traditional extract cakes. Indigofera Tinctoria. Best for Batiks, Fermentation Vats Etc. Freshest Natural Dyes Always. Harvest of May 2017. 3.5 Oz Jars Natural Indigo Extract Cake from South India. 100% sustainably sourced, fair trade. Small lots bottled at source in India. Freshest dyes. Always. Quantity - 3.5 Oz or 100 grams packed carefully in food grade jars. Instructions included. Produced and shipped FRESH from India. Indigolys by AnneGeorges FabricTreasury.