Fill a large pot with water and turn it on to boil.
Fill a large bowl with water and add a few tablespoons of lemon juice. Peel, core, and thinly slice or dice the apples, then put them into the bowl of water. Fill more bowls as needed.
Once the water is boiling, blanch the apples for one minute per batch, doing several batches, then put them into a pot with a lid to keep warm.
In a separate pot, combine the sugar, gel, spices, water, apple juice, and lemon juice. Stir over medium heat until the mixture is thick and bubbly, then fold in the warm apples.