Depends on the cinnamon. I always thought cinnamon was cinnamon. McCormicks from the grocery store. Until .... the mother of a friend of DD1's (who we were visiting in Illinois) took me to a spice store. They had 8 or 10 different cinnamons if I recall. I do recall that after smelling all of them I couldn't tell them apart any more. Vietnamese is much more potent than the usual grocery store stuff.Oh yeah we dumped a bunch on as we ate it. The recipe had cinnamon in it but boy oh boy not near enough!