1. Wikipedia is a poor source for information, especially about Italian cooking. 2. Most Italian recipes are made differently across the country, depending on what region you're in and what local ingredients are available. 3. Pappardelle is used as often as tagliatelle, even in Bologna, because of the width of the noodles. 4. The first *published* version of the recipe doesn't include the use of tomatoes, and is actually extremely tasty. 5. If you really want a good Italian cookbook, buy [this one.](https://www.amazon.com/Science-Kitchen-Lorenzo-Italian-Library/dp/0802086578/) Sorry about the Amazon link. It's where the recipe we've been discussing became popularized.