Put the mango puree, pomegranate seeds, onion, ginger, chilli, vinegar and preserving sugar in a saucepan, bring to the boil and simmer gently for approx. 4 minutes. Then add the mango cubes and let it simmer for another 4 minutes. Then try. If the sweetness of the preserving sugar is not quite enough, add a little more sugar and add a pinch of salt if necessary. The taste should be sweet-sour-hot. Then transfer to a bowl to cool. If you don't want to use it straight away, pour the mixture into screw jars that have previously been sterilized by boiling water. It stays that way for a long time.