Spaghetti Sauce

This is my version of my mum's Spaghetti Sauce, which she invented when she was about 12 years old. Her mum passed away when she was 9 and she was left in charge of her dad and little brother. I have changed it a bit over the years, but its more or less the same. It still tastes best when my dad makes it and I'm not quite sure what he does to it to get it like that.

1 medium sized onion, roughly chopped
2 cloves of garlic (depending on your taste), minced
2 tbs olive oil
1 tsp dried oregano
1 tsp dried basil
1 small tin of tomato paste
or
2 heaping tablespoons of tomato paste
1/4 c. water
2 tins of tomatoes

Sautee in a pan with the olive oil over medium heat. When the onion is soft, add the garlic. Don't let the garlic burn - it tastes gross. Add the basil and oregano, and then the tomato paste and water. Turn the heat down low and let it simmer for 5 minutes, making sure not to let it burn.
Add the tins of tomatoes, bring to the boil and then turn the heat down. Leave the lid slightly off and simmer for as long as you possibly can - the longer you leave it, the better it will taste. If you used whole tomatoes, mash them with a potato masher once it has been cooking for a while.
Serve it with fresh basil and oregano and parmesan cheese!