Split the sprouted grain English muffin and toast the halves until golden and crisp.
In a small skillet over medium heat, lightly sear the Canadian bacon for 1-2 minutes per side until warmed through.
Prepare the clean hollandaise by whisking the single egg yolk, Greek yogurt, Dijon mustard, lemon juice, sea salt, and cayenne in a heat-safe bowl.
Place the bowl over a small pot of simmering water (double boiler method) and whisk constantly for 3-5 minutes until the sauce is thickened and warm, then remove from heat.
Fill a medium saucepan with water and the white vinegar, bringing it to a very gentle simmer.
Crack the two eggs into individual ramekins, create a gentle whirlpool in the water, and carefully drop the eggs in to poach for 3 minutes.
Remove the eggs with a slotted spoon and pat dry on a paper towel.
Assemble by placing two slices of Canadian bacon on each muffin half, topping with a poached egg, and drizzling with the warm yogurt hollandaise.
Garnish with freshly chopped chives and serve immediately.