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I thought the bi was for bicarbonate, but this makes sense when the vinegar and baking soda reaction give you carbonic acid and sodium acetate.

So the Calvin's are book collector's, I was puzzling...

Baking Soda, I just can't figure out the Calvin, Oppenheimer, Moffett references.

But it goes with organic gardening, oven, medicinal, the 'bi' reference, neutralizing chemicals, making homemade...

Saltpeter?

Actually, I think I'll join you for lunch.