• 1,3 kg octopus, washed and cut in small pieces
• 1,5 cup olive oil
• 1 kg small onions, peeled (do not cut onions in pieces)
• Half cup of vinegar
• 1 cup of water
• 650 gr tomatoes, peeled and mashed
• 1 garlic clove
• 2 bay leaves
• Rosemary
• Salt
• Black thick pepper

Place all ingredients in a saucepan, bring to the simmer and cook until all the water evaporates and octopus is left with its oil.