*If you can't find birds custard powder (I think World Market has it or you could order online) then you can use vanilla pudding powder. I have seen other recipes that use pecans or walnuts instead of almonds but the original bars have almonds. I just put almond slices in a food processor and it worked great. I added the corn syrup to make the chocolate smoother. After I spread it on, I shook the pan back and forth and the chocolate smoothed nicely. Also, you may want to score the chocolate before chilling it the last time to make cutting easier.