Boil the eggs. Place the eggs in a saucepan and cover them with cold water by about 1 inch. Bring to a boil over medium heat, then cover, remove from heat, and let sit for 10–11 minutes. Transfer the eggs to a bowl of cold water and cool for at least 5 minutes.
Peel and prep the eggs. Gently tap each egg on the counter and peel while still slightly warm, starting from the dull end. Slice the eggs in half lengthwise and carefully scoop out the yolks with a small spoon into a mini food processor.
Make the ginger scallion sauce. In a heat-proof bowl, combine diced scallions, grated ginger, sesame oil, salt, white pepper, and Sichuan peppercorn powder (if using). In a small saucepan, heat the avocado oil over medium-low heat for about 7–8 minutes, until it shimmers. Carefully pour the hot oil over the scallion mixture — it will sizzle immediately. Stir well and let it sit for a few minutes to soften.
Make the filling. Add mayo, Dijon mustard, garlic powder, black pepper, and 2–2½ tbsp of the oil portion (not the solids) from the ginger scallion sauce. Pulse until creamy and smooth.
Assemble and serve. Spoon or pipe the yolk mixture into the egg whites. Top each egg with a small amount of scallion ginger sauce and a sprinkle of gochugaru or paprika if using. Serve at room temperature, with extra sauce on the side.
Tip: For a neater presentation, let guests add the sauce themselves to avoid excess oil on the plate.
Video
Notes
Salt: The ginger scallion sauce is naturally salty and full of umami, so there’s no need to add extra salt to the yolk mixture.
Make ahead:
Eggs: Hard-boil and peel, but leave them whole until ready to assemble.
Ginger scallion sauce: Make up to 7 days ahead and store in the fridge. Bring to room temperature before using. Do not reheat the oil.