Food grade Gypsum (Walkley S6)

Does anybody want this food grade gypsum for making tofu? I tried it but I'll stick to nigari.
 It's almost a full bag, about 4 tsp have been used and it's still got a long date on it. I just thought I'd ask, before I throw it.
If you ask for this, you must be able to collect, from Walkley
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