11/3 cups mayonnaise
6 scallions, white parts and 2 inches of green tops, chopped
3 garlic cloves, minced
1/4 cup freshly squeezed lemon juice
3 tablespoons grainy mustard
3 tablespoons chopped fresh parsley
3 tablespoons prepared white horseradish
2 tablespoons bottled chili sauce
Salt and freshly ground black pepper to taste
Combine mayonnaise, scallions, garlic, lemon juice, mustard, parsley, horseradish, and chili sauce in a mixing bowl. Whisk well, and season to taste with salt and pepper. Refrigerate until ready to use.
Note: The sauce can be refrigerated for up to 4 days.