Fill a medium pot with water and bring to a gentle simmer, then stir in the white vinegar.
In a small heat-safe bowl, whisk together the egg yolk, lemon juice, and Dijon mustard until the mixture is pale and slightly thickened.
Place the bowl over a pot of barely simmering water to create a double boiler and slowly whisk in the melted ghee until a smooth, velvety sauce forms.
Season the hollandaise with sea salt and black pepper, then remove from heat and cover to keep warm.
Heat a skillet over medium-high heat and sear the Canadian bacon for 1-2 minutes per side until lightly browned and warmed through.
Carefully crack each egg into a small ramekin, then slide them into the simmering water and poach for 3 minutes until whites are set but yolks remain runny.
Split and toast the sprouted grain English muffin until the edges are golden and crisp.
Place two muffin halves on a plate, top each with the Canadian bacon and a poached egg, then finish with a generous drizzle of sauce and fresh chives.