In a large saucepan, bring vinegar and 16 cups water to a boil over high heat; immediately reduce heat to a low simmer.Advertisement
Crack each egg into an individual bowl, checking for shells. Working in two batches, gently drop eggs, one at a time, into simmering water and cook for 2 minutes. Using a slotted spoon, transfer eggs to a paper-towel-lined plate to drain. Repeat process until all eggs are cooked. Let water continue to simmer.
Heat a medium skillet over medium-high heat. Cook Canadian bacon for one minute on each side; remove from heat and cover to keep warm.
Return eggs to simmering water until heated through, about 1 minute. Place each English muffin face up on a plate. Top each muffin half with a slice of Canadian bacon and a poached egg. Top eggs with Hollandaise sauce and garnish with chives. Serve immediately with roasted potatoes.