Tostones With White BBQ Sauce

For the sauce:

• ½ cup mayonnaise (120 g)
• 1 teaspoon brown mustard
• 2 teaspoons brown sugar
• 1 teaspoon horseradish
• 1 teaspoon lemon juice
• 1 a dash worcestershire sauce
• 2 teaspoons hot sauce
• ¼ teaspoon kosher salt
• ¼ teaspoon black pepper
• ¼ teaspoon garlic powder
• ¼ teaspoon onion powder
• 2 tablespoons cider vinegar
• 1 pinch cayenne

For the tostones:

• neutral frying oil, like canola or avocado
• 2 large plantains, peeled and sliced into 2-in (5 cm) pieces
• kosher salt