Step 1

Make the Green Sauce: Puree all ingredients in blender until smooth. Pour into a fine-mesh strainer set over a medium bowl. Let sit, stirring mixture in strainer occasionally so all juice drains into bowl; discard solids.

Step 2

Scrub potatoes clean and use fork to pierce each potato lightly in several places. Place potatoes in medium microwave-safe bowl. Cover bowl with paper towel and microwave on high 4 minutes or until tender (or boil potatoes on stovetop, if desired).

Step 3

Heat large skillet over medium-high heat until skillet is very hot. Pat fish dry with paper towel and season with salt. Pour oil in pan; place fish skin side-down in pan. Cook 4 minutes or until skin is very crisp. Turn and cook 2 minutes longer. Transfer fish to plate.

Step 4

Place leek whites in same skillet; cook 1 minute or until slightly softened.

Step 5

Divide yogurt, potatoes, fish and leek whites between 4 plates. Spoon green juice around fish and garnish with cilantro.