I have done this many times, but like others have said, you add the pasta water AFTER the pasta is in the oil and stirred. Adding pasta water to a pan of hot oil by itself will get a little violent. Once the pasta is incorporated into the oil, a little pasta water added will not create and drama.
I don't know how much difference the added pasta water makes with Algio e Olio. I've gone with it, and without it, and haven't been able to make a definitive judgement on the finished product. It tastes good to me, either way.
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