Tostones with Mayo-Ketchup Dipping Sauce

Score plantain peel lengthwise in 4 places, then pull the peel off. Cut the plantains into 1 1/2-inch diagonal slices. (If you have the time, soak the plantains in a medium bowl of cold water for 10 minutes, then pat dry. This will result in crispier tostones.) Line a large plate with paper towels.

Heat oil in a 10-inch skillet over medium heat until hot (375°F). Add half the plantain slices and cook, turning once, until they're lightly browned, crispy and sound hollow when tapped, about 2 minutes per side. Transfer to the prepared plate until cool enough to handle.

Place the fried plantains on a clean, hard surface. Using the bottom of a mason jar or small saucepan, smash them flat. Reheat the oil over medium heat; refry the tostones until hot, about 2 minutes more. Transfer to the plate and sprinkle with salt. Repeat frying, smashing and refrying with the remaining batch of plantain slices.

Stir mayonnaise, ketchup and garlic powder together in a small bowl. Serve with the tostones.