Hi everyone. I've had a few cracks at making spaghetti with pasta sauce. I've tried with sauce in a jar (Dolmio and Lloyd Grossman) and I've tried using just passata in a jar. The issue I've been having is that the sauce is extremely watery. Here is a photo of what I would like the sauce to look like. It comes up when typing pasta sauce into Google image search. https://www.themediterraneandish.com/wp-content/uploads/2020/04/homemade-spaghetti-sauce-4.jpg
In short, my sauce never looks like that. The sauce in the photo looks nice and thick. Are there any tips you can give me to make the sauce a bit thicker and not as watery?