Caper Lemon Tartar Sauce
1 cup mayo
2 tablespoons capers, drained and chopped
2 tablespoons pickle relish
1 tablespoon fresh lemon juice
1 1/2 teaspoons white wine vinegar
1/2 teaspoon Worcestershire sauce
Kosher salt and freshly ground black pepper

Fennel Slaw
1 1/2 cups red cabbage, sliced thin
1/4 cup fresh parsley leaves, chopped
1 medium bulb fennel, trimmed and thinly sliced, save fronds for garnish
2 tablespoons fresh lemon juice (from about 1 lemon)
2 tablespoons Dijon mustard
1/2 cup extra-virgin olive oil
Kosher salt and freshly ground black pepper

Fish
6 cups peanut oil, for frying
2 cups plus 1/2 cup flour
1 teaspoon baking powder
1/4 teaspoon table salt
One 12-ounce bottle good beer (Irish stout preferred)
1 egg, lightly beaten
1 pound cod fillet, cut into pieces the length of the buns
Kosher salt and freshly ground black pepper

Sandwich Build
8 parker house rolls, buttered and griddled until toasted