01 - Heat a grill pan or cast-iron skillet over high heat until smoking hot.
02 - Place the trimmed scallions on the hot pan and cook, turning occasionally, until deeply charred and blackened in spots, about 3 to 4 minutes. Transfer to a plate and let cool slightly.
03 - Roughly chop the charred scallions into small pieces, reserving a few green tops for garnish if desired.
04 - In a medium mixing bowl, combine the sour cream, Greek yogurt, mayonnaise, minced garlic, soy sauce, toasted sesame oil, kosher salt, black pepper, and lime juice. Whisk until smooth and well blended.
05 - Gently fold the chopped charred scallions and 2 tablespoons of chili crisp into the creamy base. Stir until fully integrated throughout.
06 - Taste the dip and adjust the salt, lime juice, or chili crisp as needed to balance the flavors.
07 - Transfer the dip to a serving bowl. Swirl extra chili crisp on top and scatter sliced scallion greens over the surface. Serve chilled or at room temperature alongside chips, crudités, or grilled meats.