Meanwhile, bring 2 inches of water in a wide pot to a boil. Add vinegar and reduce heat to medium-low to maintain a gentle simmer. Crack each egg into a small bowl and slip them, one at a time, into the simmering water, taking care not to break the yolks. Poach for 4 minutes for soft-set, 5 minutes for medium-set, and 8 minutes for hard-set. Using a slotted spoon, transfer the eggs to a clean kitchen towel to drain.