I made some earlier tonight.
Onion, garlic, no celery this time, beef, flour, tin of plum tomatoes, fill tin with water snd add, tomato purée, sugar, salt and pepper, half a teaspoon of all the following spices oregano, basil, cinnamon, nutmeg, paprika, bay leaf. Worcestershire sauce or Maggie sauce. Cook slowly for as long as possible.
I was going to add some milk on the back of this thread but forgot.
My bolognaise has been tweaked over many years and is rich and delicious.
The trick is to cut the onion very small and fry gently till it's soft and see through and on the verge of caramelising then add the beef till brown but not all of it, add tinned tomatoes then water then everything else stir and leave on low for as long as possible