01 - Set a grill pan or cast-iron skillet over high heat and allow it to become smoking hot before adding any ingredients.
02 - Lay the trimmed scallions across the hot pan in a single layer. Cook for 3 to 4 minutes, turning occasionally, until deeply charred and blackened in spots. Transfer to a plate and let rest until cool enough to handle.
03 - Roughly chop the charred scallions into small pieces, reserving a few of the dark 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 - Add the chopped charred scallions and 2 tablespoons of chili crisp to the creamy base. Fold gently until evenly distributed throughout the mixture.
06 - Taste the dip and adjust the salt, lime juice, or chili crisp to your preference before transferring to a serving vessel.
07 - Spoon the dip into a serving bowl. Swirl extra chili crisp across the top and scatter sliced scallion greens over the surface. Serve chilled or at room temperature alongside chips, crudités, or grilled meats.