In a medium bowl, combine ½ cup of mayonnaise, 1-2 tablespoons of sriracha, 1 tablespoon of white vinegar, 1 teaspoon of granulated sugar, and 1 tablespoon of fresh lemon juice. Whisk these ingredients until smooth, about 1-2 minutes.

Using your hands or a fork, shred 8 ounces of imitation crab into thin, stringy pieces.

Julienne 1 English cucumber and 1 medium carrot into thin strands, removing cucumber seeds.

Pat the julienned cucumber dry on a dish towel or paper towels for 2-3 minutes.

In a large bowl, combine the shredded imitation crab, dried cucumber, and julienned carrots. Toss gently.

Pour the spicy mayo dressing over the salad base and toss until evenly coated.

Sprinkle ¼ cup of panko crumbs on top just before serving.