3 glasses of passata (yes, that is cheating, but unless you are at the height of home-grown tomato season, it will give a better flavour).
9 slices white bread (toast bread) soaked in water
3 medium cucumbers, half peeled, and diced
9 red peppers trimmed and diced
9 garlic cloves
3 large or 6 small red onions
3 dl olive oil
3-6 tblsp sherry vinegar
Chop, blend, and mix it all together. Easily stacked in the fridge, transported and poured from in empty plastic bottles for example from distilled water.