Thermoses

Have you ever seen a guy rushing to the office on a cold morning, concerned more about the bottle he is holding than anything else? These small bottles are thermoses and contain freshly baked coffee or other beverages that will remain with the guy to sip and enjoy for the rest of the day.  

Thermoses are also known as a vacuum flask, Dewar flasks or Dewar bottles. These are insulating storage vessels that increase the time over which the content remains hotter or cooler than the flask’s surroundings. Sir James Dewar initially invested in these flasks in 1892. In its traditional make, the flask consists of two flasks, one within the other and joined at the neck. The gap between the two flasks is partially evacuated of air. It creates a vacuum in between the two flasks that significantly reduces heat transfer by convection or conduction. 

Tips for using a thermos for food like a pro 

From hot soups to chilling smoothies, it can give you many options to securely enjoy homemade food and drinks, even when you are away from home. They are ideal for carrying homemade food for picnics or a day out with friends or family, taking your regular meal to work. You can also see them using kids for carrying food to school or college and sportspeople using it to carry their beverages without spillage. The durable features of these thermoses make them an ideal option for people of all ages. Here are some tips on how you can take the best benefit of these containers in your day to day life. 

Know the dos and don’ts with an insulated vacuum thermos 

They are meant to facilitate you with homemade food around the day. These kitchen utensils are used to pack food and keep it fresh for a long time. However, some types of food may get spoiled in staying in these thermoses for long or placed incorrectly. You can use them to pack foods that have some liquid or sauce like soup or stew. It can only keep the food hot or cold if it has some sauce in it. A dehydrated recipe will lose temperature with time, and if kept for longer, it will start getting spoiled. 

Consider the timeline for the content in the thermos 

They help keep the food fresh, but they are not a replacement for refrigerators in any way. The food will get spoiled ultimately. This is because they can serve you until a limited time. To know the ability of your individual item, you can read the product description while buying online or read the instruction manual that comes with the product. It will guide you on how long they can keep your food secure. The food will remain safe for the stated time period and add it in smoking hot or cold conditions. Otherwise, harmful bacteria will start growing in the food and make it unsafe for consumption. 

About packing cold food

It would help if you took some extra measures while packing cold food. Start by cleaning the thermos and chilling it in the refrigerator or freezer. If needed, you can also fill the container with ice and water. Put the lid on. Let it sit for a few minutes to cool, then pour out the water. Once it is chilled, put cold food and pack the thermos neck tightly. You can carry some cold food items are; Muesli: Overnight Apple Pie Oatmeal; Milk; Yogurt; Smoothie: Apple Blueberry Smoothie; or any other type of 100% juice. 

About packing hot food items 

Whether you are adding cold or hot food items in the thermos, make sure there are no remains of previous food in the container. Always properly clean and dry the thermos before adding new food to it. Now warm it by adding boiling water. Put the lid on. Let it sit for a few minutes, then pour out the water. Once your thermos is warm, quickly add steaming hot food (at or above 74°C or 165°F) or boiling drinks and put the lid on tightly. Now pack the thermos with hot food just before leaving home and airtight the lid. You can use it to carry food like hot oatmeal, Congee, Latte, tea, coffee or soup, etc.