I got onto a source of local tomatoes recently. They have been lovely so I decided to buy a heap and preserve them. Today I've gotten out my Aunty Dora's vacola pot and bottles and have made 6 large jars of passata. It was pretty easy, just peel and deseed the tomatoes, process and put into the preserving jars. I then simmered them for about 2 hours.
My son thinks it would be easier to just buy it! But it was good to do and has just made me more determined to get the hang of growing tomatoes.