In a pan, on the lowest heat setting your stove can handle (or do the fancy double-boiler thing, but I've had better results this way), place 2 egg yolks and your white wine vinegar. Whish together
Slowly whisk-in the melted butter. The mixture should become thick and custardy
Mix-in lemon juice, salt, and pepper to taste. Your Hollandaise sauce is now ready.
Get a decently sized pot almost full of water and a splash of white vinegar. Heat to a simmer.
Use a spoon or ladle to stir the water, forming a gentle whirlpool. Add your 2 whole eggs (out of the shell) and poach until the yolks are set.
Toast your English muffin
With the English muffin as a base, top with smoked salmon, poached egg, then finish with Hollandaise.