Cut the apples into small dice, place in a pot, and cover with the apple cider. Add the cinnamon stick, sugar, and lemon. Keep just below a simmer and poach until the apples are just tender, about 10 minutes.
Drain, discard the lemon, and reserve the apples. Reduce the poaching liquid to 8 oz/230 g.
Bloom the gelatin in cool water, drain, and melt in