Instructions

1. Place shallot, bay leaf and wine in a small saucepan and bring to a boil. Reduce until the wine is almost evaporated, about 5 minutes. Remove from the heat, discard bay leaf and transfer to a small bowl. Add sour cream, lemon juice, 1 teaspoon dill, mustard and 1/4 teaspoon salt; stir to combine.
2. Put breadcrumbs, pistachios, the remaining 1 teaspoon dill and 1/4 teaspoon salt in a blender or food processor. Process until finely ground. Transfer to a shallow bowl. Dredge both sides of the tuna in the pistachio mixture.
3. Heat oil in a large nonstick skillet over medium heat. Add the tuna and cook until browned, adjusting the heat as necessary to prevent burning, 4 to 5 minutes per side for medium-rare. Serve with the lemon-dill sauce.
    

Note:

We like Ian's brand of coarse dry whole-wheat breadcrumbs, labeled "Panko breadcrumbs." Find them in the natural-foods section of large supermarkets. Or, make your own breadcrumbs: Trim crusts from firm sandwich bread. Tear the bread into pieces and process in a food processor until coarse crumbs form. One slice makes about 1/3 cup. Spread the breadcrumbs on a baking sheet and bake at 250°F until dry and crispy, about 15 minutes.

Scaling Disclaimer: EatingWell recipes are tested extensively in the EatingWell Test Kitchen. EatingWell cannot guarantee a recipe that has been scaled to make a different number of servings from the original. Also note that scaling only applies to the ingredient measurements: no adjustment is made to the recipe instructions, so pan sizes and cooking times and ingredient amounts referred to in the text of the recipe only apply to the original number of servings.

From www.eatingwell.com with permission. © 2009 EatingWell Inc.