[QUOTE=bibliophage;21239704Your best bet may be the medicine cabinet. A Rolaids tablet contains 750 mg of calcium carbonate, a base. Pure calcium carbonate is sometimes sold as a baking soda substitute for those on a low-sodium diet. The tablets I have are only 40% calcium carbonate by weight, and calcium carbonate is less effective at producing carbon dioxide, so you’d have to use quite a lot. I would try about 3 Rolaids tablets (pulverized in a coffee or spice grinder) for every ¼ teaspoon of baking soda called for. Or 3 Rolaids tablets pulverized plus ½ teaspoon cream of tartar for every teaspoon of baking powder called for.[/QUOTE]
Mmm… minty fresh dumplings…