1/2 cup Gefen Mayonnaise

1/2 cup parve cream cheese, at room temperature

1 tablespoon fresh lemon juice or Tuscanini Lemon Juice

1 tablespoon Haddar Dijon Mustard

1 tablespoon cleaned and chopped fresh flatleaf parsley

2 teaspoons refrigerated prepared horseradish, such as Manischewitz

1/2 teaspoon sriracha, plus more for serving

1/4 teaspoon Worcestershire sauce

1/4 teaspoon Old Bay Seasoning

10 ounces boneless, skinless smoked white fish, chopped

2 large flatbreads or wraps

2 cups cleaned baby arugula

1/2 cup pickled onions (recipe follows)

1/2 cup Tuscanini Apple Cider Vinegar, white wine vinegar, or rice vinegar

1 tablespoon sugar

1 and 1/2 teaspoons kosher salt

1 red onion, thinly sliced