Peel the kiwis, weigh 100 g of flesh and cut into small pieces. Peel the mango, cut the flesh off the stone, weigh 125 g and chop finely. Puree the kiwi and mango pulp, lime juice and jam sugar in a high mixing bowl with a hand blender for approx. 45 seconds.
Pour into clean twist-off jars and close. Jam keeps in the refrigerator for about 2 weeks.