Tarter Sauce

1/3 cup mayonnaise
3 tablespoons roughly chopped cornichon pickles
2 tablespoons roughly chopped capers
1 tablespoon finely chopped dill
2 tablespoons freshly squeezed lemon juice or white wine vinegar

Combine all of the ingredients in a small bowl or jar. Store in an airtight container in the fridge for up to 6 months.