Begin boiling water and 2 tbsp of white wine vinegar in a large pan.
Once water is at a high boil, turn to a very low simmer.
Toast the English muffins.
While the English muffins are toasting, heat Prosciutto in a sauté pan for approximately 2 - 3 minutes and set aside.
Once water is at a very low simmer, vigorously swirl the water to create a vortex. Carefully break eggs into ramekins, slowly add eggs one at a time into the vortex. Cook approximately 2 1/2 minutes to 3 minutes maximum per egg.
Remove eggs carefully using a slotted spoon onto a paper towel lined plate to absorb excess water.
If hollandaise sauce is too thick add a tsp of hot water from double boiler until at a custard consistency.
On each plate add the two slices of English muffin, top with 4 slices Prosciutto on each slice, add one poached egg to each and top generously with Hollandaise sauce.
Sprinkle with chopped scallions.
Serve and enjoy!