Step 1

Wash the tomatoes well and put them into a mixing bowl filled with water.

Step 2

Cut out the green parts and any bruising or stains. Chop them in half and add to a large pot. Add water to your chopped tomatoes.

Step 3

Cut the bell pepper in half, remove the stems and seeds. Slice into strips and add to your chopped tomatoes.

Step 4

Boil the tomatoes over medium heat for 20-25 minutes. After this, the tomatoes should have broken down and created a thick consistency.

Step 5

With a large colander, strain the tomatoes and let the liquid pour. Place the drained tomatoes and peppers in another bowl. You might need to do this in batches.

Step 6

In batches, add your tomatoes and pepper strips into your food mill with a bowl underneath. This will separate the skin from the flesh. Repeat until you've gone through all your tomatoes. Remember to scrape down at the bottom of the mill to include the pulp.

Step 7

Transfer the passata to a bottle and process them.