To prepare the tater tots with truffle aioli, you'll need: 1 pound ground beef, 2 tablespoons butter, 1 teaspoon kosher salt, 1/2 teaspoon ground black pepper, and 1 tablespoon olive oil. Preheat the oven to 375 degrees F (190 degrees C) and line 2 large rimmed baking sheets with parchment paper. Heat the butter over medium-high heat until it turns golden brown, about 2 minutes. Add the flour and cook, whisking constantly, until the mixture resembles coarse crumbs. Gradually stir in the milk, stirring constantly. Remove the pan from the heat and add the salt and pepper to taste. Pour the batter into the prepared pan and spread it out evenly. Bake for 12 to 15 minutes or until browned. Serve warm.