TUNA TARTINE

• YIELD:serves 4
• ACTIVE TIME:10 minutes
• TOTAL TIME:10 minutes

Ingredients

• 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

Directions

1. 1.
   In a medium bowl, whisk together the yolk, mustard, and red wine vinegar with a good pinch of salt. While whisking vigorously, drizzle in the oil a little at a time to form the mayonnaise.
   
   

   1. Stir the caperberries into the mayonnaise, then taste and season with salt and a splash of vinegar, if necessary.
   2. 3.
      Spread the caperberry mayonnaise onto the bread all the way to the edges. Spoon the tuna onto the bread and top it with a dusting of paprika.
   3. 4.
      Serve the open-faced sandwiches with a squeeze of lemon.