Mashed potatoes themselves do not have a specific dietary allowance, as their nutritional value can vary based on preparation methods and added ingredients (like butter, cream, or milk). However, mashed potatoes are primarily a source of carbohydrates, particularly starch, and they can also provide some vitamins and minerals, especially when made with the skin.
When considering dietary guidelines, it's more common to look at the recommended daily intake of specific nutrients like carbohydrates, fiber, and certain vitamins and minerals rather than mashed potatoes as a standalone item.
For adults, the Dietary Guidelines for Americans recommend that carbohydrates make up about 45-65% of total daily calories. For a typical diet of 2,000 calories, this translates to about 225 to 325 grams of carbohydrates daily. One medium potato (about 150 grams) contains roughly 30 grams of carbohydrates, so mashed potatoes can fit into this allowance.
If you're specifically looking for information on dietary allowances related to other nutrients that mashed potatoes contain, please provide more details!