About 15 minutes, and another three hours or more to chill.
A blender and a 4-cup mold, preferably in a shape
suitable for seafood.
Put the Gelatine, Lemon Juice, Onion slice, and
Boiling Water into the blender and blend on high speed for 40 seconds.
Add the Mayonnaise, Paprika, Dill, and Salmon
and blend well.
Slowly add the Heavy Cream, 1/3 C. at a time,
Blend 30 seconds more to be sure everything is
Spoon into a 4-cup mold, and gently tamp down
to eliminate air pockets.
Chill for a few hours, until set.
Serve on a white linen napkin on a nice plate.
Garnish with sliced lemon and parsley, or with something more interesting.