Place your salmon in saucepan and pour just enough water to cover. Add a pinch of salt and a few peppercorns just for flavor. Place it over medium heat and bring to a simmer. Cook just enough until the salmon is cooked. The time will vary depending on the size and cut of your salmon. If you're using smoked salmon, skip this step.
Once the salmon is cooked, let it cook for 5 minutes. Place all the ingredients in a food processor. Blend until smooth. Season with salt and pepper.
You can eat the salmon moussed on crackers or toast. I punched out 1 3/4" circles and toasted them in a pan over medium heat with some butter. Toast each side just until golden brown. The salmon mousse was pipped with a medium star tip.