To make the hollandaise, combine the egg yolks, lemon juice, cayenne and salt in a blender until pale yellow in color, about 30-60 seconds. With the motor running, add the butter in a slow stream until emulsified.
STEP 2
To assemble the eggs benedict, place the sliced smoked salmon on each English muffin. Top with the sliced avocado and poached egg, drizzling the tops with hollandaise sauce. Serve immediately.