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.
Cook on medium-high without the lid. You want a steady rolling boil, stirring occasionally to prevent sticking to bottom of pot. Boil for 1 1/2 hours to 4 hours, depending on amount of fruit you have. A smaller amount won't take as long so use your own judgement.