In a small saucepan, bring 1 cup of water and a pinch of sea salt to a boil. Slowly whisk in the dry polenta to prevent clumping.
Reduce the heat to low, cover the saucepan, and simmer the polenta for 20-25 minutes, stirring every few minutes until it is thick and creamy.
While the polenta is simmering, heat 1 teaspoon of olive oil in a large skillet over medium-high heat.
Add the ground pork to the skillet, breaking it into small pieces with a wooden spoon, and cook until browned and no longer pink.
Stir in the diced yellow onion, celery, and minced garlic. Sauté for about 5 minutes until the vegetables are soft and fragrant.
Pour in the tomato puree and add the dried oregano, sea salt, and black pepper. Stir well to combine all ingredients.
Lower the heat and let the ragu simmer gently for 10 minutes, allowing the sauce to thicken and the flavors to develop.
Divide the warm polenta into serving bowls and top with a generous portion of the pork ragu.
Finish each dish with a sprinkle of grated parmesan cheese and serve immediately.