The most tedious task when making tomato sauce is removing the water. With that in mind I decided that rather than boiling them in water to soften I would heat them in the oven. Worked great. The food mill removed the skln and seeds. Placing the juice and pulp in a large roasting pan and then using the oven means you are not standing at the stove boiling it down with the inherent risk of scorching it. I set the oven at 250, prop the oven door open slightly with a pot holder to let the moisture escape, and then stir it about once a hour.
The type tomato you are using will dictate how long it takes to cook down. Romas being a meatier tomato take substantially less time than a juicy beefsteak. Twelve hours is not unusual for cooking time but you don't have to watch it like you would cooking them on the stove top.
The type tomato you are using will dictate how long it takes to cook down. Romas being a meatier tomato take substantially less time than a juicy beefsteak. Twelve hours is not unusual for cooking time but you don't have to watch it like you would cooking them on the stove top.