BOXTY

Steps:

• Preheat oven to 300°F. Cook cut potato in saucepan of boiling salted water until tender, about 15 minutes. Drain. Return to saucepan and mash. Transfer 1 cup mashed potato to large bowl; reserve any remaining mashed potato for another use. Mix grated potato, flour, baking soda, and salt into 1 cup mashed potatoes. Gradually mix in enough buttermilk to form texture of firm mashed potatoes.
• Heat heavy large skillet over medium-high heat until hot. Brush with oil. Drop 1 heaping tablespoonful potato mixture into skillet. Using back of spoon, flatten mixture into 2-inch round. Repeat, forming 4 more rounds. Cook over medium-low heat until boxty is golden brown on bottom and slightly puffed, about 3 minutes. Turn and cook until second side is brown, about 3 minutes. Transfer to baking sheet; keep warm in oven. Repeat with remaining potato mixture in batches, brushing skillet with more oil as necessary.