Remoulade Sauce a la New Orleans

1 cup mayonnaise
1/4 cup chili sauce
2 tablespoons Creole mustard
2 tablespoons extra-virgin olive oil
1 tablespoon Louisiana-style hot sauce, or to taste
2 tablespoons fresh lemon juice
1 teaspoon Worcestershire sauce
4 medium scallions, chopped
2 tablespoons chopped fresh parsley
2 tablespoons chopped green olives
2 tablespoons minced celery
1 clove garlic, minced
1/2 teaspoon chili powder
1 teaspoon salt, or to taste
1/2 teaspoon ground black pepper
1 teaspoon capers, chopped (optional)

Mix all ingredients together. Cover and refrigerate.