Should You Simmer With the Lid On or Off?
Many recipes and meals call for food to be simmered on the stove, where you allow the food to cook slowly, rather than bubble away while boiling. While recipes call for food to be simmered, it isn’t always clear if you should leave the lid on or off.
Should you simmer with the lid on or off?
Whether you simmer food with the lid on or off will depend on what you are cooking, and what you are wanting to achieve through the simmering process. Foods such as curry, chili, and soup should be simmered with the lid off, whereas rice, broth-based dishes, and braising recipes require the lid on.
While it might not be so clear in a recipe whether or not you should simmer food with the lid on or off, there are a few tips to keep in mind that can help you work out whether the food you are cooking needs to be simmered with the lid on or off.
What Is Simmering?
Let’s start off by covering what simmering is. Simmering is a cooking technique, where foods are cooked in liquids that are kept just below the boiling point but above poaching temperature.
Creating a steady simmer usually involves bringing the liquids to a boil, and then reducing the heat source to bring the liquid and foods to a constant lower temperature.
Using simmering as a cooking technique cooks food gently, and prevents it from evaporating too quickly or burning.
Should Simmering Be Done With the Lid On or Off?
Simmering can be done with the lid on, or the lid off. Whether or not the lid is left on will depend on the food you are cooking, and what you are wanting to achieve through the simmering technique.
Certain foods need to be simmered with the lid off, where you want the food to thicken, and certain foods need to be simmered with the lid on, when you don’t want the moisture to evaporate.
If the recipe you are following does not call for the lid to be on or off during simmering, then consider what you are cooking, and what you are wanting to achieve through the cooking process.
Simmering With the Lid Off
Simmering with the lid off helps to maintain a slow and gentle cooking temperature. By keeping the lid off, you are allowing heat and moisture to escape, which works well to reduce and thicken the liquids you are cooking.
This is suited for soups, curry, and chili, where you want to leave the ingredients to gently cook, and for the liquids to thicken before serving, without the ingredients burning and sticking to the bottom.
Simmering With the Lid On
Simmering with the lid on has quite a different effect than simmering with the lid off. When the lid is kept on during simmering, it maintains the temperature more and speeds up the cooking process.
The lid also prevents moisture loss and keeps the temperature steady. This is suited for cooking rice and other foods that need to remain liquid and not thicken too much.
Consider the Stage of Cooking
Whether you leave the lid on or off during simmering will also depend on what stage of cooking you are at. Sometimes, you will need to keep the lid on during the initial stages of cooking and remove it later on.
Keeping the lid on during the early stages of cooking helps the temperature of the liquid to rise, for quick heating.
This can be helpful when you have added liquid or ingredients to the pot that aren’t hot yet, and you need them to warm up quickly.
It could also help to keep the lid on during simmering if you are cooking the food for an extended period, to avoid the food drying out. You can then remove the lid at a later stage to allow it to thicken just before serving.
Removing the lid however also helps to maintain a slow and steady temperature, so it all depends on the stage of cooking, and how long you are planning on cooking the food for.
Which Foods Need to Be Simmered With the Lid On?
To save you some working out, we have listed some of the most popular foods cooked in a saucepan below, and whether or not these foods need to be simmered with the lid on or off:
Soup
Soup can be cooked with the lid on and off. When bringing the soup to a simmer, you should keep the lid on, as this helps to increase temperature and retain heat more, while softening the ingredients.
After some time, the lid can be removed, and the soup can be simmered without a lid to thicken and to stop the ingredients from boiling over.
It also depends on what soup you are cooking. Broth-based soups do well with the lid off, whereas thicker soups such as cream of mushroom soup, do best with the lid kept off.
Curry
Curry sauce needs to be thick enough to coat the meat and vegetables, but still thin enough to spread over rice and form a nice sauce. To achieve this, the curry should be simmered with the lid off.
If the lid is kept on while the curry is simmered, then the evaporation will drop back into the curry and cause the sauce to become too thin, and it will dilute the flavor as well.
Bolognese
Bolognese needs to be cooked for at least an hour and a half, to soften and break down the meat, to develop the flavors, and enrich the sauce.
To do this, the best would be to simmer the bolognese with the lid off. When the lid is kept off, the liquids will evaporate, allowing the sauce to thicken and deepen in flavor. The rich flavors meld together perfectly as they reduce in the sauce.
Keeping the lid off also means you can keep the bolognese cooking for longer, as the heat won’t become too high and the sauce won’t thin down due to trapped moisture.
Chili
Chili is similar to bolognese when it comes to the cooking process and even some of the ingredients used. Because of this, it is also best when simmered with the lid off.
This allows it to gently simmer, and for the beef to brown and the tomatoes to cook down. Once this happens, you can cover the pot and leave it to simmer with the lid on to retain the moisture, softening all the ingredients together.
When it is time to add in the beans, you can simmer with the lid off, to thicken the sauce and concentrate the flavor more.
Braising
Braising is a technique that helps to soften the meat, making it melt-in-your-mouth tender. Braising involves pan-searing meat on high heat, and then partially submerging the meat in a liquid such as broth, and slow-cooking it until tender and succulent.
When braising, it is best to simmer with the lid on. This traps in steam, which further helps to break down the tough connective tissue in the meat, making it soft and tender. Simmering with the lid off means that the liquid will evaporate, and the meat will dry out.
Rice
Rice is best cooked with the lid on, as it leaves the moisture in the saucepan, and allows the rice to absorb the liquid, instead of drying out and even sticking to the bottom of the pan.
When simmering rice with the lid on, you need to make sure the temperature does not rise too high in the pot, as the rice might begin to burn and stick to the bottom of the pan, and it will not absorb moisture at the right rate and cook properly.
Should You Simmer With the Lid On or Off?
Simmering can be done with the lid on and off, it just depends on what you are cooking, and what you are wanting to achieve through the cooking process.
To thicken a sauce, or to cook a curry or creamy soup, then it is best to leave the lid off, to keep temperature down and allow moisture to escape. To keep moisture in and allow for more constant temperatures, the lid should be left on.
Take a read through the above guide to figure out when you should leave the lid on during simmering, and when it is best to keep it off!
Related Questions
Does Simmering Mean Cooking on the Lowest Heat?
Simmering does not necessarily mean cook on the lowest heat. Simmering can often be done on medium-low heat, where the temperature is kept just below boiling, but not too low that it is at a poaching temperature.
Is Simmering Similar to Slow Cooking?
Simmering is similar to slow cooking, where you cook the ingredients at a low temperature for a longer period of time. However, slow cooking usually takes quite a while longer compared to simmering on the stove, and it also depends on what you are cooking.
