Arrange the slices on the dehydrator trays in a single layer.
Place the trays in the dehydrator and set to 51 - 55˚C (125 - 135˚F) for 12 to 15 hours. Depending on where you live, the current conditions and the humidity, they may take a little longer to dry.
They will be dry when they are brittle.
Once the tomato slices are dry, remove them from the racks. They can be conditioned and stored in a glass jar at this point, or you can turn them into tomato powder.
Dehydrating Cherry Tomatoes
Wash the tomatoes and cut them in half.
Place on the dehydrator with the skin side down on the tray.
Dry at 52˚C (125˚F) for around 10 to 18 hours.
When dry, condition and store in an airtight container for up to one year.
Dehydrate Tomatoes in the Oven
Wash and dry the tomatoes.
Slice up the tomatoes using large tomatoes, or cut the cherry tomatoes in half.
Place the tomatoes slices / cut cherry tomatoes skin-side down on baking paper lined trays.
Dry in the oven that is set at its lowest temperature - or 77˚C (170˚F) - leaving the door slightly ajar. Place a heat-proof spoon in the door if possible.
Dry for around 4 to 8 hours, until dry. Make sure to keep an eye of them for any burning or browning.
Condition and store in an airtight container for up to 12 months.
Making Tomato Powder
To make tomato powder, grind down your dried tomato slices until you have a nice, fine powder. A blender, food processor or coffee grinder work well for this. If using a food processor to powder the tomato, you may need to pour the powder through a fine-mesh strainer to sift the coarse bits out and reprocess.
Store the powder in a mason jar and keep in a cool, dry place. For long term storage, you can seal the jar with a Foodsaver.
Using Tomato Powder
Paste: To make a paste with the tomato powder, use a ratio of 1:1. Therefore 1 teaspoon of tomato powder to 1 teaspoon of warm water. A little salt can be added to taste. If you find that it is not thick enough for you, try using another part of powder (2:1).
Sauce: To make a sauce, use a ratio of 1:2. Therefore 1 teaspoon of tomato powder to 2 teaspoons of warm water. Again, a little salt can be added, if desired. To make around 1 cup of sauce, mix ¼ cup of powder with ½ cup of water.
Tomato Sauce: For a simple tomato sauce recipe add a little salt, onion powder, garlic powder, honey and white vinegar and simmer for around 20 minutes.
Pizza Sauce: For a pizza sauce, make the sauce as above, and add your favourite herbs such as Italian herbs, basil, thyme, or oregano.
Tomato Soup: To make tomato soup use 1 teaspoon of tomato powder, 1 teaspoon of warm water and 2 teaspoons of cream.
Thicken a Soup: To thicken a soup, stir through a little powder until you get your desired thickness.
Juice: To make tomato juice, use 1 teaspoon of powder to ½ cup of water.
Thickener: Tomato powder can also be used as a thickener in chill's, and stews.
Flavour: It will also add a delicious flavour to meatloaves, taco meat seasoning, pizza sauce and more.
Nutritional information is an estimate and provided as a courtesy. The values may vary according to the ingredients and tools that are used. Please use your preferred nutritional calculator for more detailed information.