Peel and finely dice the onion and weigh 140 g. Wash and halve the apricots, remove the stones. Finely dice the flesh. Weigh 300 g of flesh. Mix apricots, onion, vinegar and mustard seeds in a pot. Add sugar and stir in
Bring to the boil while stirring, boil over high heat while stirring for about 6 minutes. Fill jam into twist-off jars, close well. Put on the lid for about 5 minutes, turn over again and let cool off