Ingredients

1/4 cup fresh lemon juice 

1/3 cup extra-virgin olive oil 

2 tablespoons balsamic vinegar 

1/2 red onion, sliced 

1/4 cup chopped fresh flat-leaf parsley 

2 anchovies, rinsed well and chopped 

1 tablespoon capers packed in salt, rinsed 

1 tablespoon finely grated lemon zest (from 2 lemons) 

1 teaspoon black peppercorns, crushed 

1 teaspoon coarse salt 

Preparation

Whisk together all of the ingredients in a medium nonreactive bowl. Use marinade immediately.