Tartine Bakery's Tuna Tartine Recipe

Ingredients (10)

• 1 egg yolk
• 2 teaspoons Dijon mustard
• 1 tablespoon red wine vinegar
• salt
• 1 cup neutral oil, or a combination of neutral and olive
• 10-12 caperberries, roughly chopped (or an equivalent amount of capers)
• 4 large slices rustic bread, toasted
• 10 ounces high-quality tuna in olive oil
• Smoked paprika or za’atar, for dusting
• 1 lemon, cut into wedges