Wrap the food in aluminum foil and a towel. First, place the food in a sealed container. Then wrap the food in thick aluminum foil and be careful not to leave holes where hot air can escape. Finally, wrap 2-3 towels tightly around the food and aluminum foil.
Towels are also good insulators and prevent heat from escaping to the outside air. By having a high-quality cooler, preheating it and adding additional heating elements, such as hot water bottles or hot bricks (which we'll talk about later), you can often keep food warm for 6 to 12 hours in a cooler. When you boil food and put it in a thermos pot, it can stay above 160°F (77°C) for up to 8 hours and above 60°C (140°F), which is considered the “danger zone” for bacteria growth for up to 15 hours. Cooler bags help keep food warm for a short period of time, unlike other methods.
Heat your food and immediately put it in the cooler bag and close it. The best way to prepare a cooler to heat hot food is to heat it with hot water for at least half an hour. You can leave the hot water in the fridge for up to a couple of hours. A cost-effective way to keep food warm in a lunchbox is to wrap hot foods in aluminum foil.
Although wrapping hot foods in aluminum foil won't keep them warm for hours on end, it will keep food warm for a short period of time. They don't require water or flame and are much easier to install. The only downside is that they require electricity to operate. Therefore, you should consider the cost, as well as the location where you want to install them.
To use one, you DO NOT need electricity. It uses insulating heat and keeps food warm for many hours. Read more about how they work here. You probably think of ice when you think of the word cooler, but what we can forget is that refrigerators are great for insulating anything, whether it's cold or hot.
You can safely keep food warm in a cooler for 4 to 6 hours if you take appropriate steps to turn the cooler into a “hot box”. Tip* The oven heating temperature in degrees Celsius is about 93ºC. Time and food can be enemies, especially when food is heated for extended periods of time. You don't want your food to dry out.
You should also make sure that your food never falls into the danger zone, which is between 40°F and 140°F. Once you do, you'll have TWO hours before bacteria start to grow. Two hours isn't a long time, so if you're going to serve a seated dinner, you should keep the food above 140°F until the last minute and serve the food straight from the oven directly to the table. If you keep food warm for more than 2 to 3 hours, I recommend that you use a quick-reading thermometer to help you control the temperature of the food.
Safe temperature zones must be considered, in addition to the fact that foods dry easily over time the longer they are heated. You can use your slow cooker to stay warm as long as the temperature of the food stays above 140 degrees F. Whenever you increase the internal temperature of food between 36 and 37 °F (2-3 °C), food will cool much more slowly, especially if you cook a large amount of food. It's all about keeping food out of the temperature hazard zone and it doesn't really matter the source of the heat (as long as you're careful not to overcook or dry them).
If you're a fan of science, the Department of Agronomy at Iowa State University explains how the thermal energy of hot foods is reflected in aluminum foil to retain heat. There are many different brands, but Thermos is the original brand and they still make some of the best insulating thermos for food. Even if the food is on a countertop in a disposable pan, wrapping it with aluminum foil or towels will retain heat. Obviously, the most important advantage of cooking fresh is that all your guests will be able to enjoy their food hot, while it is at their ideal point.
If you cook food hot enough and transfer it to the thermos, the food can stay at an optimal temperature of 140°F (60°C) for at least 4 hours. If the food is not well padded in the layers of the thick towels, you may not get the desired results. The easiest way if you want to cook or heat food without the need for electricity is to get a gas stove. If that's the case, you'll need to make sure that the food has time to warm up before the guests are served and that they will stay warm until the end of the party.
I love cooking outdoors with live fire and smoking regardless of the weather, using several grills, smokers and wood ovens to produce epic food. It is easy to use, since you just have to place the food in the microwave, plug in the microwave, turn on the power switch and let the food warm up. . .