- a 3 1/2-pound frozen octopus, thawed
- 2 carrots, sliced
- 1 large onion, sliced
- 3 fresh parsley sprigs
- 1 teaspoon whole black peppercorns
- 8 whole cloves
- 1 bay leaf
- 2 celery ribs, 1 rib halved and the other cut into 1/4-inch-thick slices
- 1/2 cup dried cannellini or Great Northern beans, picked over
- 1 bunch arugula, washed well and spun dry
- 3 tablespoons lemon juice
- 2 tablespoons extra-virgin olive oil
- 1/4 teaspoon dried hot red pepper flakes
- Cut tentacles from octopus and discard head. In a large kettle combine octopus, carrots, onion, parsley, peppercorns, cloves, bay leaf, and halved celery rib with water to cover. Bring water to a boil and simmer, covered, 40 minutes, or until octopus is tender. Remove kettle from heat and cool mixture 30 minutes.
- While octopus is cooking and cooling, in a saucepan simmer beans in 4 cups water, covered, 45 minutes, or until tender, and remove pan from heat. Cool beans in cooking liquid and drain.
- Transfer octopus with tongs to a colander and rinse gently under cold water to remove as much of purple outer coating as possible without removing suction cups. Drain octopus and cut into 1 1/2-inch-long pieces. In a bowl, combine octopus and beans. Salad may be prepared up to this point 1 day ahead and chilled, covered.
- Chop enough arugula (preferably larger leaves) to measure about 1/2 cup.
- In a large bowl toss together octopus and beans, chopped and whole arugula, celery slices, lemon juice, oil, red pepper flakes, and salt and freshly ground black pepper to taste.