For approx. 5 glasses (à approx. 300 ml) clean 1 chilli pepper, cut lengthwise, remove seeds and wash. Peel 1 piece of ginger (20 g) and 1 garlic clove. Chop everything roughly. Put 2 cans (à 425 ml) of tomatoes in a large pot. Puree with a hand blender. Stir in 2 tbsp. balsamic vinegar and 500 g jam sugar (2 : 1).
Bring to the boil while stirring, cook for 5-10 minutes until bubbly. Test the gelling. Immediately pour into hot rinsed twist-off glasses. Close the jars, place on the lid for about 5 minutes. Turn them over again and let them cool down.