Sauce secrets:
1. The sugar thing really works. If I'm lazy I use sugar, but the best solution is after sauteeing the onions and garlic put in a cup or bit more of wine and let it reduce till the alcohol smell goes away then add the rest of the ingredients.
2. a bay leaf or two.
3. some red chilli flakes.
4. just a bit of cinnamon. not too much. experiment 1/8 of a tsp more each time until you find the right point for the amount of your sauce. You don't want to really taste it so less is more. It just makes the taste more complex.
Oh yeah, if you're still using the green kraft shake on parmesan stop it.
The real parmesan
Spend the $10 and get a chunk of parmigiano reggiano don't accept anything else. Then start putting it on everything. I really like to fry it until crispy and put it on sandwiches.