01 -
Bring a small saucepan of water to a gentle simmer. Add white vinegar.
02 -
Crack each egg into a small bowl. Carefully swirl the water with a spoon to create a vortex, and gently slip one egg into the center.
03 -
Poach each egg for about 3–4 minutes until the whites are set but the yolk is still runny. Remove with a slotted spoon and drain on paper towels.
04 -
Meanwhile, mash the avocado in a bowl with a pinch of salt, pepper, and a squeeze of lemon juice if using.
05 -
Spread the mashed avocado generously over the toasted bread slices.
06 -
Top each toast with a poached egg.
07 -
Sprinkle with red pepper flakes, everything bagel seasoning, or additional salt and pepper as desired.
08 -
Serve immediately.