Cut the bacon strips into smaller pieces and fry up crisp in a skillet. Drain the bacon, reserving the bacon grease for later to fry the pancakes (or use vegetable oil).
4 strips Bacon
Let the bacon bits cool on paper towels so they absorb any excess bacon grease.
In a large bowl, combine the mashed potatoes, grated potatoes, salt, and pepper.
1½ cup Mashed potatoes, 1 large Potatoes, 1 teaspoon Salt, ¼ teaspoon Black pepper
Gradually add the flour, baking powder, and buttermilk, mixing until just combined. Be careful not to overmix, as this can result in tough boxty.
¾ cup Flour, 1 teaspoon baking soda, ¾ cups buttermilk
Heat bacon grease or oil in a large skillet over medium heat.
¼ cup Bacon grease
Scoop out about ¼ cup of the potato mixture and form it into a flat patty. Gently place it into the hot oil. Fry the boxty for 3-4 minutes per side, or until golden brown and crispy.
Drain on paper towels to remove excess oil. Repeat steps 4-6 with the remaining potato mixture.
Serve immediately with a dollop of sour cream and the crisp bacon as garnish.