Wash apples thoroughly, cut into slices. Put apple slices and 250 ml water into a large pot, bring to the boil, cover and simmer at low heat for 25-30 minutes. In the meantime, line a large sieve with a gauze cloth. Hang the sieve in a large pot. Pour in apples and let them drain well overnight (yields about 1000 ml juice). Measure out 900 ml juice.
Wash the thyme, dab dry and pluck the leaves from the stalks. Mix juice and gelling sugar well in a large pot. Bring to the boil over a high heat, add thyme, stir continuously (with a wooden spoon) for 3-4 minutes until bubbly. Place prepared glasses on a damp cloth, immediately fill jelly to the brim, close, place on the lid and leave to stand for about 5 minutes. Turn over again and let it cool down
Waiting time approx. 12 hours