Preheat an outdoor grill for medium-high heat, and lightly oil the grate.
Stir the cucumber, sour cream, lemon juice, and lemon zest in a small bowl until combined. Season to taste with salt, and refrigerate until ready to serve. Heat 2 tablespoons of olive oil in a skillet over medium heat. Stir in the onion and garlic; cook and stir until the onion has softened and turned translucent, about 5 minutes. Pour in the chili sauce, vinegar, and Worcestershire sauce. Bring to a simmer and cook 5 minutes to blend the flavors. Season with black pepper, and remove from the heat.
Brush the swordfish steaks on all sides with the 2 teaspoons of olive oil. Cook on the preheated grill until the fish is no longer translucent in the center, and easily flakes with a fork, about 3 minutes per side. Baste with the chili sauce while grilling. Serve the swordfish with lemon slices and the cucumber sauce.
Nutritional Facts
Per 8 servings
Calories: 291
Carbohydrate: 14g
Fat: 15g
Fiber: 2g
Protein: 25g
Sugar: 5g
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