Squash is a good source of potassium. Beans are a good source of potassium. Avocado is high in potassium. Kiwis are packed with potassium, an essential mineral that helps the body maintain proper levels of hydration and electrolytes.
Step 2. Boil 1 to 1 1/2 qt. of water in a large pot. When the water has reached a rolling boil, dump the escarole for 2 minutes, stirring once or twice as the stems soften. Lift the escarole out with a slotted spoon onto a plate and transfer to the colander where you may leave it to drain for up to an hour.
Carefully add the white wine and bring to a boil. Return the octopus to the casserole; if necessary, add up to 1 cup of water to cover the octopus. Cover the casserole and braise over moderately low heat until very tender, about 1 hour and 30 minutes. Transfer the octopus to a plate and let cool completely.