Linguine with Spinach

It is pasta’s nature to be simple. I’ve long made a vegetable sauce by poaching greens such as spinach in the pasta water, then removing them and adding the pasta, a neat trick. But my friend Jack Bishop, author of Vegetarian Italian Cooking, mentioned that he’d gone one step further, cooking the greens right in with the pasta and adding seasonings at the last minute. The method relies on the fact that there is a period of two or three minutes between the moment when the pasta’s last traces of chalkiness disappear and the point where it begins to become mushy. If, just before the pasta is done, you add the greens, whose tough stems have been removed, greens and pasta will finish cooking at the same time. When making this dish and others like it, you must adhere to the often ignored canon of allowing at least a gallon of water per pound of pasta, because you need a pot large enough to accommodate the greens and because they cannot be allowed to slow down the cooking too much