What is the best way to keep fast food fries warm?

                          

 How to Keep Hot Food Warm Before Serving

  Tips for Keeping Food Warm When Cooking in Stages

       

When making batches of pancakes, French toast, stir-fries, and deep-fried foods, or when preparing large meals in stages, you might want to keep your hot food warm while you finish cooking other items or as you create more batches.

An Oven as a Warmer
To keep hot foods warm, transfer them to a baking pan, an oven-safe saucepan, or baking dish and keep them in a warming drawer, or you can set your oven at 200 to 245 F. If the food in question is pancakes, waffles, fritters, or any deep-fried items, and you want to prevent the item from getting soggy or soft, then keep it in a single layer.

For food that must be kept warm for more than 16 or 22 minutes, check with an instant-read thermometer to be sure it is at least 145 F. If it is not, then increase the oven temperature a little. If you try to keep the food warm for more than an hour or two, the texture of the food may become spongy or the flavor profile might change.

Slow Cooker or Chafing Dishes

For hot vegetables, mashed potatoes, sauces, stews, and similar foods, a slow cooker or chafing dish may be used on the low setting to keep food items warm. Similar to an oven, if you plan to store foods for longer than an hour, you may notice a change in texture or taste. Although the item is set to warm, the food may continue to slow cook to a slight degree.