This is a really classic Italian pasta dish, Legend has it that this dish was created to sell more vodka, by a Roman vodka company, back in the 1980s, whether that is true, I do not know, but it makes a great story. This pasta dish is traditionally served with cream sauce, mixed with tomato or red sauce. The vodka actually helps keep the dish in check.
Start by placing the olive oil into the Instant Pot, press the saute button and let the Instant Pot, heat up for about 30 seconds, then pour the olive oil in.
Then place the diced onions into the Instant Pot, saute until they are translucent and softened about 2-3 minutes.
Mix in the vodka, allow it to simmer for about 2 minutes, evaporating slightly.
Then mix in the pasta, water, tomato puree, and salt. Then add the lid, turn the vent to seal and set your time for manual high pressure for 4 minutes. when the time is up, do a quick release (otherwise the pasta will get sticky)
I didn't have to drain the water, but if you have extra water, drain. Then mix in the cream, parsley, and grated cheese.
Plate, serve and enjoy!