01 - Heat a grill pan or cast-iron skillet over high heat until smoking hot.
02 - Lay the trimmed scallions across the hot pan and cook, turning every minute, until deeply charred and blackened in spots, about 3 to 4 minutes total. Transfer to a plate and let cool slightly.
03 - Roughly chop the cooled 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. Stir until smooth and well blended.
05 - Gently fold the chopped charred scallions and 2 tablespoons of chili crisp into the creamy base. Stir until evenly distributed throughout.
06 - Taste the dip and adjust the salt or lime juice as needed to balance the flavors.
07 - Transfer the dip to a serving bowl. Swirl extra chili crisp over the top and scatter sliced scallion greens as a garnish. Serve chilled or at room temperature alongside chips, crudités, or grilled meats.