Bring to a boil 3 quarts of water and reduce to a rolling simmer.
Heat a large skillet or an enameled cast iron pot on medium-high heat.
Wash veg, rinse and drain rice. Finely chop carrot, celery and onion and mince garlic.
Add oil to hot pan and sauté veg for about 3 minutes. Then add rice, herbs, spices, and black pepper. Allow rice to toast for a minute, stirring to keep from burning.
Using a ladle, add about 2 cups worth of the boiling water and the mashed pumpkin to the skillet. Stir for a couple of minutes, add salt now then cover and lower heat to medium-low. Cook for 15 minutes, remove cover and add about 2 cups more water, stir for a couple of minutes and replace cover. The rice should be bubbling throughout the process. Cook for 10 more minutes, then add more water as needed, stir and cover again.
Repeat process and Cook for 10 more minutes, adding more water as needed. Repeat process for one last time and cook for 10 minutes more (45 minutes total) and add more water if needed. Test rice for doneness and seasoning, should be cooked completely through but still have a bite like al dente pasta, add more salt to taste if wanted.
Once done, turn off heat. Stir in coconut milk or cream now or top the dish with it when serving. Serve with maple glazed carrots, onion and wild mushrooms and toasted pumpkin seeds. Enjoy!