Green tomatoes can ripen at home using a few basic steps. There is no need to throw away tomatoes that are still green after picking. Green tomatoes can also ripen indoors when kept in the right conditions. One simple method is to place them in a paper bag with a few small holes. The bag helps keep the natural gas released by the tomatoes close to the fruit. This gas helps the tomatoes ripen.Keeping the tomatoes stem-side up can also help protect them while they change colour. A ripe banana or apple can be added to the bag to help the process move faster. The tomatoes should stay at room temperature and away from direct sunlight. A daily check can help you remove spoiled tomatoes before they affect the others.
Steps to turn green tomatoes red at home
Choose the right green tomatoes
Start with well-developed green tomatoes that were picked from the plant. Choose tomatoes that are firm and do not have any signs of rot or damage. Very small tomatoes may not ripen properly. If possible, keep the stem attached when picking them. Do not wash the tomatoes before placing them in the bag, as extra moisture can increase the chance of spoilage. Before you begin, check each tomato and set aside any that have soft or damaged spots.
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Put the tomatoes in a paper bag
Place the green tomatoes in a paper bag with the stem side facing up. Place the tomatoes with enough space between them for air to move around. The bag helps keep some of the natural gas released by the tomatoes close to the fruit. This gas helps the tomatoes ripen. Leave the bag loosely closed so some air can pass through. A simple paper bag with enough space for the tomatoes is all you need for this method.
Make a few small holes in the bag
Make a few small holes in the paper bag to allow some air to move through. The holes also help keep some of the natural gas from the tomatoes inside the bag. Do not close the bag completely or use a plastic bag. Keep the bag loosely closed and place it in a dry spot indoors. This allows some air to move through while the tomatoes continue to ripen.
Keep the bag in a shaded place
Place the paper bag in a dry indoor spot away from direct sunlight. Green tomatoes do not need direct sunlight to ripen. Keeping them at room temperature gives them the warmth they need. Avoid placing the bag in a refrigerator while the tomatoes are still green because cold temperatures can slow the ripening process. Try to keep the bag in one steady place. This makes it easier to check the tomatoes each day and remove any fruit that starts to spoil.
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Check the tomatoes every day
Check the tomatoes once a day to see how they are ripening. Look for colour changes; some may start turning red within a few days, while others may need more time. The ripening time depends on how green the tomatoes were when they were picked. The process can take one to five days, or may take up to two weeks to ripen indoors. Remove any tomato that develops mould or starts to rot.
Common mistakes that can slow the process down
Keep the paper bag loosely closed
The tomatoes need some airflow as they ripen. Make a few small holes in the bag and keep it loosely closed. This allows air to move through while keeping some of the natural gas near the tomatoes. Avoid using a sealed plastic bag because it can trap too much moisture around the fruit. Keep the bag dry and place it in a suitable indoor spot where the tomatoes can ripen naturally.
Avoid washing the tomatoes before storing
Do not wash the tomatoes before placing them in the bag. Extra moisture can make the bag wet and increase the chance of spoilage. Keep the tomatoes dry when you put them inside. It is also helpful to check each tomato before storing it and remove any dirt without adding moisture. If a tomato needs washing, clean it when you are ready to use it. This helps keep the tomatoes dry while they continue to ripen indoors.
Avoid keeping green tomatoes in the refrigerator
Green tomatoes should stay at room temperature while they are ripening. A cold refrigerator can slow this process. The tomatoes also need a suitable indoor environment where they can continue to change naturally. Keep the bag in a dry place and avoid areas that are very cold. Once the tomatoes begin to turn colour, continue checking them regularly. A tomato that is ready to eat should have a ripe colour and feel slightly soft when pressed gently.
Keep green tomatoes away from direct sunlight
It may seem helpful to place green tomatoes on a sunny windowsill, but direct sunlight is not needed for ripening. An indoor place is a better choice. Strong sunlight can also cause uneven changes in the fruit. Keeping the tomatoes away from direct light gives them a more stable place to ripen. The same rule applies when using the paper bag method. Find a dry counter, shelf, or another suitable indoor spot. The main aim is to keep the tomatoes at room temperature while giving them enough space and airflow to continue ripening.
Keep spoiled tomatoes away from the others
Check every tomato when you open the bag. Look for soft spots, mould, or other clear signs of spoilage. Remove any tomato that starts to rot so it does not affect the other tomatoes in the bag. This is especially important when several tomatoes are ripening together. A quick daily check takes only a little time and makes it easier to separate ripe tomatoes from those that still need more time.
