In my search for those foods that can help me control my blood pressure, I've been particularly pleased with potatoes. They are high in potassium, which is proving to be of some importance in helping to prevent high blood pressure. A single potato will supply about 20 percent of my daily need for potassium. Potatoes are also sources of protein, vitamin C, vitamin B6, phosporus, magnesium, and fiber. But how do you take this nutritionally valuable food and make it into potato salad without destroying its nutritional balance by adding a series of high-fat ingredients? This recipe provides a delicious answer.