I don't use tinned tomatoes in my bolognaise, just oil, sugar, chopped onions, minced beef and tomatoe puree.
Non, non, non, non, non, non, non, NON!
Spag Bol is diced onion, chopped pepper (x3 red, green and yellow), mushrooms quartered or halved depending on size, tomato puree (loads), pesto (loads), 2 tins of chopped tomatoes with herbs, crushed garlic (3 segments), veggie mince (for the lady of the house, but we all like it), a squirt of tomato ketchup (the secret ingredient), and four Oxo cubes made into paste with a little boiling water (2 veg, 2 beef - the lady of the house doesn't seem to mind beef Oxo cubes - I don't argue about it any more). Feeds eight, or four people for two days.
SUGAR?