Oh dear! Helps if you read the instructions correctly! Should have been Calcium Carbonate not garden lime! Should be able to get the Calcium Carbonate from the local brew shop. Will re-use the dye bath and just add the calcium carbonate and see whether we can revive the dye, if not the liquid will end up on the garden and we will start again.
Today we started our trials with Madder, a very different process to that of indigo! Madder requires a mordant, we used one dip of alum on yarn and fabric, and also some with just a gall dip; Jenny Dean’s recipe uses an alum, gall and alum mordant regime. We had an over abundance of red guavas so have tried them as a mordant too. You start with cold water, add the garden lime (madder responds better in hard water), madder powder and fabric/yarn. The water temperature needs to rise and hold at 80 C for 45minutes, then leave to cool overnight. I guess we will see whether any are a success but have a feeling we may have been a little stingy with only 20grams of madder powder!