Cut up washed potatoes into large manageable chunks. Feel free to keep skins on! (Red potatoes make especially pretty dishes). Boil in salted water for about 20 minutes until fork tender. Drain, smash with potato masher, add optional ingredients, and transfer to serving dish.
Options: boil with garlic cloves; add caramelized onions, butter, milk, mayonnaise, cheese, sour cream, chives, shredded cheese, or even bacon. Add any or as much as you want to taste!