Cheesy Meatballs with 'disgusting' all-in Chili Sauce

Disgusting! Since I was disposed to this word spoken by a friend of mine in his typical Yorkshire accent at various occasions I came to use it too often as well. Yes, I know, that is disgusting!
While I don't want to classify the following cheesy meatballs as disgusting, you have to judge for yourself as regards the chili sauce.

The meatballs themselves are based on a recipe by Jamie Oliver: Mountain Meatballs. I simply adjusted at to my personal amounts and availability. 
The chili sauce contains a little bit of this and a little bit of that. I will roughly state the ingredients, but the real content has to remain shrouded in mystery.

Ingredients Meatballs:
1 red onion, finely diced
300 g minced meat
1 tsp Dijon mustard
1 tsp dried oregano
A few bashed cumin seeds
1 tsp bashed up coriander seeds
1 handful of breadcrumbs
1 egg
Salt and pepper
50 g grated cheese

Ingredients Chili Sauce:
1 onion, finely chopped
5 cloves of garlic, finely chopped
Tomato puree
Honey mustard BBQ sauce
Water
Curry ketchup
Sweet chili sauce 
Coffee liquor

Method:
Heat up some olive oil on medium heat and then soften the red onion dice in it. 10 minutes will do. Remove the onion pieces from the pan and put away to cool down.
Then start the sauce and do the same with the stated onion as you did with the other onion. Hm ... sounds strange to me ... ah ... forget it ... no worries ... just do it. Then add the garlic.
Meanwhile you can also start heating up your oven to ... eh ... let's say 250 °C.
Now add all your other ingredients for the sauce to the pan, bring to the boil and then reduce to a simmer.
Back to the meatballs ... mix all the other ingredients apart from the grated cheese together and form ... eh ... 4 large meatballs out of it. Get a quarter of the grated cheese ... wait ... that's about 12,5 g and press it into each meatball and close with meat around it so the cheese is more or less in the center of the meatball.
Throw your meatballs into an oven-proof dish and transfer ... no throwing here ... to the oven for 25 minutes.
In the meantime the sauce is disgustingly bubbling away. It gets more and more sticky ...
The 25 minutes are over. Remove the meatballs ... don't burn yourself ... and pour the disgusting sauce over the meatballs and ... shove the dish back to the oven for 15 more minutes.
After that you still can decide whether to eat it or not. Well, surprisingly the sauce didn't taste disgusting as to be expected or announced. It rather tasted interesting.
Oh, I know what people mean, when they say interesting. It's the polite way of saying disgusting. But, really, it didn't taste like that. Frankly, it was rather good. It simply was a sticky mix of sweet and hot and ... there is only one way of finding out ...