I saw one of the owners of Pasta Pomodoro make this on a local tv show. The measurements are approximate as he only demonstrated the ingredients used, no measurements. But this dish is easy and pretty hard to mess up. Mine tasted just as good as the one from the restaurant (I just tried this dish about a couple of weeks ago). A couple of pointers to make it tasty: Be sure to salt your water for pasta, this gives your pasta some flavor. After adding the pasta to the sauce, cook it for a minute of two so the pasta soaks up the sauce. After this step, you can taste and adjust flavor, adding parmesan cheese to give it more flavor (optional). Note: I actually didn't use the entire package of porchini mushrooms, only a little more than 1/2 of the package because it's expensive, also I used baby spinach instead of arugula because my kids do not appreciate the "bite" of the arugula.