I live in Toronto, Canada. The big, grocery store chains I usually shop at only carry up to "whipping cream". I used this in a recipe, thinking the lack of a few percentages of milk fat will not be a big deal. My recipe turned out to be a little more runny than it should have been and so it's got me thinking that it's because I used "whipping cream" as opposed to "heavy cream". Does heavy cream have to be bought at specialty food stores? And if so, which one?