Dissolve the gelatin in 1 1/2 liters of water (or follow instructions on packaging).
Bring to a boil until fully dissolved, then add the sugar. Remove from heat.
Stir in the instant coffee and dissolve thoroughly.
Transfer in a shallow container to spread about 1 inch thick. Set aside.
When the gelatin sets, cut into cubes.
In a a separate container, blend the all-purpose cream and condensed milk.
Add the gelatin and refrigerate.