Bring the pineapple to the fire with the sugar and let it cook until soft, strain and reserve the syrup.
Dissolve the gelatin boxes in 3 cups of boiling water, stir and add 2 cups of ice-cold water in the freezer until it starts to set.
In a blender, beat the cream, the condensed milk, the pineapple gelatin, the syrup and the colorless gelatin, hydrated in 2 tablespoons of water and dissolved in a water bath.
Spread the cooked pineapple on a platter and cover with half of the gelatine beaten in the blender, refrigerate until firm. Spread the chopped peaches and cover with the rest of the gelatin.
Return to the fridge to firm.
decorate as you want