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Alum in Israel

I feel like a cheerleader for alum lately, and why not, it’s better
for the planet. Alum is sold as a pickling spice, and also as a dye
retardant (I think, although it might be the opposite) for textiles.
I used to buy big bags of it at the fabric store.


— david thorp

I have to amend part of my last statement about Alum, it is not a
dye retardant, it is a mordant, which is something that sets dye
into fabric. david thorp