Prosperity Pesto Pasta

Why This Prosperity Pesto Pasta Works

During cooking, the spaghetti soaks up boiling water and swells, so the strands stay firm but not hard. A bit of that starchy water is saved, and that turns out to be important later. The starch in the water is loose and cloudy, and it clings to the pasta surface.

In the food processor, the basil, pine nuts, cheese, and garlic are chopped into tiny pieces. As the olive oil goes in, it slides between all those bits and turns them into a loose paste. The cheese thickens it a little, but on its own the pesto is still a bit heavy and can sit in clumps.

Once the hot pasta is tossed with the pesto, the warmth softens the cheese and garlic and loosens the oil. A splash of the starchy pasta water thins the pesto just enough so it can spread and grab onto every strand. By the time it is mixed, the sauce is smooth, glossy, and sticks to the spaghetti instead of sliding off.

Mistakes To Avoid

Letting the spaghetti cook past al dente makes it too soft, and once it’s tossed with the pesto and a bit of hot pasta water, the strands swell and start to break. The sauce then clings in a heavy way, and the whole dish turns mushy instead of springy and light.

Adding all the pasta water at once often leaves the pesto watery and thin. Instead of lightly coating the noodles, the sauce slides off and pools at the bottom of the bowl, so the pasta tastes plain while the liquid gathers underneath.

Running the food processor too long after the oil goes in can overwork the basil and nuts. The mixture warms up, the basil darkens, and the pesto turns thick and pasty instead of loose and glossy, making it harder to toss evenly with the spaghetti.

Skipping the step of salting the pesto properly leads to a flat, dull bowl of pasta. The Parmesan and basil then taste muted, and the pasta itself seems bland even though all the right ingredients are there.