Can anyone help me find pickling lime (aka calcium hydroxide, quick lime, slaked lime) ? I have tried all of the obvious sources -- Rainbow, various hardware stores with decent canning sections, supermarkets. I know that I can find it online easily, but I'm wondering if I'm overlooking some local resource. I have promised my grandmother that I would make her watermelon rind pickle, like she had growing up in the South, and she particularly specified pickling lime as a key ingredient to get that perfect crispness. Many thanks in advance.