Jars are pointless, they are just tomatoes, herbs and sugar, I am capable of buying them separately.
Onion, garlic, fry.
Add mince, fry
Add marmite, Hendersons, sugar, stock cube, various herbs to taste, smoked paprika, bit of chilli, garlic powder, pepper
Add 2 tins tomatoes, fill up tins with water and add that.
Simmer for ages, several hours. Salt at the end.