Heat the olive oil in a 5-quart heavy bottom pot, like a dutch oven. Use medium heat.
Saute the onions for 5 to 7 minutes until soft. Do not brown the onions. Stir a couple of times during the cooking.Note: If the onions starts to brown, reduce the heat. Season onions with a pinch of the salt. Add the oregano, garlic and sliced mushrooms. And sprinkle in a generous amount of the freshly ground black pepper. Stir and cook 5 to 6 minutes until cooked and any liquid released is absorbed. The mushrooms will reduce to about 1/2.Note: I used medium high heat to cook the mushrooms and stir/mix a couple of times during the cooking. Season the cooked mushrooms with a generous amount of the salt and some more black pepper. Stir.
Add in the tomato paste and stir to incorporate with the mushrooms onion mixture.
Add in the chopped tomatoes. Season with the remaining salt and black pepper.
Add the cinnamon, nutmeg and sugar. Stir/Mix. Cook 8 to 10 minutes until the tomatoes break down. Stir once or twice during cooking.
Add in the Worcestershire sauce and vodka. Stir and cook until reduced to half.
Add in 2 tablespoons of the freshly chopped parsley and 1 tablespoon chopped chives.
Pour in 1 cup pasta water. Stir. Bring to a boil. Cook 2 to 3 minutes using medium heat.
Add in the pasta. Stir/mix. Cover with a tight lid and cook 2 to 3 minutes.Note: The pasta will cook though to perfect al dente and it will absorb some of the sauce. Turn off the stove and add 1 more tablespoon of the fresh parsley.
Transfer to a serving bowl. Garnish with remaining parsley and chives. Enjoy!