Despite being a relatively straightforward process, canning does involve a bit of science and takes technique to master. That's why avid canners ensure they're using all the tricks of the trade available to them to ensure safe and effective results for every batch of vegetables, fruits, and sauces they can. When it comes to safety, the last thing you want is to be working with boiling liquids and delicate glass, only to have it explode all over your kitchen and potentially cause injury. And when it comes to effectiveness, you defeat the purpose of canning if only a fraction of the contents of your jars achieve the necessary level of heat transfer–as this can cause a tainted finished product. That's part of the reason why canning racks exist. In essence, a canning rack ensures that the bottoms of your jars are slightly elevated as to not be too close to the heating element of your stovetop. It's also to ensure that the boiling water itself is able to come into contact with all surfaces of the jar, without entering the jar itself. So whether you're new to canning or are looking to trade-in your homemade rack for something designed for the job, a canning rack is a must-have for your at-home canning set. We took a look at a few options and put together a list of what we considered to be the best.