To make Orange Hollandaise: In small bowl, add egg yolks, orange juice and salt. Blend until combined. Gradually add melted butter into egg mixture while blending. Set aside.
In skillet, add water halfway up sides. Add vinegar. Bring to simmer. Break eggs into water to poach. Cook 3-4 minutes until whites are cooked through and yolks are still runny. Using slotted spoon, remove eggs and drain on paper towels.
Spread butter on one side of bread slices. Place bread in skillet and cook until golden brown. Add ham to same skillet and cook until browned on both sides..
To assemble, spread bread slices with orange marmalade. Top each with one slice cooked ham and one poached egg. Pour hollandaise over eggs and garnish with orange zest.
