Squeeze the lemon. Pour about 400 ml water and lemon juice into a bowl. Prepare quinces. Cut into fine cubes and put them immediately into the lemon water. Peel and finely dice onions and ginger.
Place the quinces in a sieve and drain. Heat the oil in a wide saucepan. Brown the onions and ginger in it. Add quinces and steam for 8-10 minutes. Sprinkle with sugar and caramelise slightly while stirring.
Deglaze with vinegar and apple juice, bring to the boil. Simmer open at low to medium heat for about 40 minutes.
Season quince chutney with salt and pepper. Pour immediately into prepared glasses. Close tightly and place on the lid for about 5 minutes. Turn over and let it cool down. Cheese tastes good with it (e.g.
Cheddar and Camembert). But also goes well with duck breast and steak.