Peel and quarter the onions and blitz them in the food processor until finely chopped.
Add the sun-dried tomato oil to one of your large saucepans on medium heat and saute the onions, stirring, for 5-6 minutes.
As the onions cook, peel the carrots and pulse them in the food processor with the celery until minced. You can chop the carrots and celery into smaller chunks before adding them into the food processor.
Peel and grate the garlic and add it to to the pan. Stir for a minute.
Remove the leaves from the rosemary and thyme and finely chop.
Add your carrots, celery, rosemary and thyme to the saucepan, reduce the heat slightly and saute. Stir occasionally for 12-15 minutes until cooked.
As those ingredients cook, pulse the chestnut mushrooms in the food processor until finely minced.
Add to the pan along with the drained sun-dried tomatoes. You can cut the sundried-tomatoes as you like.
Stir, increase the heat slightly and saute again. Stir for 8-10 minutes.
Add your red wine, allow the heat to increase for 5-6 minutes until nearly all the liquid has evaporated.
Add the tomato puree, miso paste, balsamic vinegar, oregano, and soy sauce and stir for 1 minute.
Add the chopped tomatoes and water.
Lower the heat back down to medium and simmer for 30 minutes.
Taste and season with salt and pepper.