Good to know
The mousse keeps for 3 days in the refrigerator. For a cleaner look, it is possible to mould the mousse into small silicone moulds and freeze. You just have to unmould the mousse and let it thaw in the refrigerator for several hours before serving. For easy handling, I like to place the still frozen mousse on small squares of parchment paper. Once thawed, it is easier to move to the plates.
The clementine reduction will keep for up to 5 days in an airtight container in the refrigerator.