Place a large sautéing pan on medium and once hot pour the oil and the onions. Sauté for 3-4’ until softened and transparent. Add the spices, sweet chili flakes - hot paprika – nutmeg – coriander - all-spice - cinnnamon, along with the ginger and mix well.
Add the sugar and allow to melt and dissolve while stirring and then pour the vinegar. Let it warm and add the pears, the apples and the raisins and mix well.
Pour the orange juice along with the zest and the saffron, bring to a boil and simmer uncovered for 20’ making sure that most of the liquid has been absorbed but not completely dried out. Finally, drop in the tomatoes, give it a good stir and remove from the heat to a bowl to allow to cool before storing in sterilized jars.