Break the chilled, smoked salmon down into small pieces, then crush with a fork.
Combine the salmon with the lemon juice and cream cheese to make the salmon mousse. Taste then adjust with extra lemon, salt, or pepper to your preferred taste.
Top the cucumbers with the salmon mousse and garnish with a small piece of dill.
RV or Cabin Option
Place all the mouse ingredients in a blender and process until smooth.
Use a piping bag to place the salmon mousse on the cucumber.