In a large skillet or frying pan, fry bacon slices to preferred crispness over medium heat.
In a small pot, barely simmer some water with the vinegar. Poach eggs by gently cracking and adding to the pot, one egg at a time. (Water that is too agitated will break up the fragile egg.) Poach each egg for about 4 minutes, or until the desired doneness. Remove each egg from the pot with a slotted spoon.
While your eggs are poaching, you can be toasting your English muffins.
To make the hollandaise sauce, add the 3 egg yolks, lemon juice, salt, and hot sauce to a blender. Blend for about 20 seconds on medium to medium-high. Then slowly add the melted butter to the blender.
Assemble your Benedicts. Top your English muffin with 2 strips of bacon, a poached egg, then drizzle the hollandaise sauce over the top. Sprinkle with chives, and enjoy!