Yup, precisely why i chose to grow them this year.
Nope, not adding anything that isn’t home grown.
If i start adding commercial products then i may as well have bought the sauce from a supermarket in the first place.
I’ve no idea how many fresh home grown tomato sauces you’ve made, but mine certainly needs nothing to accentuate the flavour other than the fresh Basil, onion & garlic.
That said, when the next batch comes on song, i’ll roast the tomatoes instead of chucking them in a pot and add a splash of white wine with the alcohol burnt off first, which is what i always use when making any meat sauce.