485607 Sat Feb 02 07:33:15 -0800 2008 2 23 Ontario (including Toronto) 0 3358212 Hey Hounds So where can I find this stuff in TO?? DT Sat Feb 02 07:33:15 -0800 2008 11291 Davwud 1 3358350 Baking is not my greatest skill, but I believe that all ordinary supermarket baking powder is "double acting". Sat Feb 02 08:40:34 -0800 2008 3358212 23411 embee 1 3360821 Embee is correct. When in doubt, just look at the label - it will generally say "double acting" or "continuous action." Single-acting baking powders are a lot more difficult to work with, so you don't see them around as much. Sun Feb 03 08:27:08 -0800 2008 3358212 139230 Wahooty