Keep the jars hot until you're ready to fill them. Add the diced tomatoes to a large pot and boil over medium-high heat, stirring occasionally, for 5 minutes. Add bottled lemon juice (or citric ...

crushed tomatoes, diced tomatoes, and even tomato paste. Whew! With so many similar-sounding products, they've all gotta be basically the same thing, right? Well... not so much. In fact ...