Begin canning diced tomatoes by blanching whole tomatoes for 60 seconds. Remove the tomato skins before dicing tomatoes and filling pint or quart jars. Add bottled lemon juice to the canning jars to acidify the tomatoes and process in a water bath canner for 35-60 minutes.
Preparation Needed for Canning Diced Tomatoes
There are several steps necessary for preparing diced tomatoes for canning.
It is important to prepare the canning equipment while preparing the tomatoes so they are ready at the same time.
- Inspect canning jars for imperfections before washing them to ensure there are no cracks or chips.
- Sanitize the canning jars by running them through the dishwasher or placing them in boiling water for ten minutes.
- Wash canning lids and screw bands with soap and hot water. Soak the lids in warm water for about twenty minutes to soften the sealing compound to help it adhere to the canning jars.
- Fill a hot water bath canner halfway with water and bring the water to a boil.
- Wash tomatoes using cool, running water to remove dirt and debris.
- Removing tomato skin is optional but yields a more uniform product. To remove the skin, score the tomato with a sharp knife along the bottom. Prepare a stockpot with boiling water for blanching. Drop the tomatoes into the water for 45-60 seconds, then submerge them in an ice bath to complete the blanching process. The tomato skins are easily removed after blanching.
- Core the tomatoes and trim away any bruises or blemishes. Then dice them into uniform slices using a sharp knife. Once diced, the tomatoes are ready for water bath canning.
What Tools Do You Need for Canning Diced Tomatoes?
Canning diced tomatoes is a lot easier with the proper equipment:
- Canning funnel
- Canning jars (pint jars or quart jars)
- Canning lids and screw bands
- Cutting board
- Jar lifter
- Large bowl
- Large stock pot
- Slotted Spoon
- Water bath canner
Ensure all of the necessary tools are sanitized and ready before canning.
Do You Need to Pressure Can Diced Tomatoes?
Per the National Center for Home Food Preservation, it is not necessary to pressure can diced tomatoes. Thanks to the addition of citric acid or bottled lemon juice, the acidity of the tomatoes will have been raised enough to be safe to process in a water bath.
Many home canners prefer the water bath method over using a pressure canner since pressure canning can leave the tomatoes mushy if they’re overprocessed.
How Long Do You Water Bath Diced Tomatoes?
It is vital not to start timing until the jars are sealed into the canner, and the water is at a rolling boil.
The processing time for diced tomatoes in a water bath will depend on elevation:
|Elevation (ft)||0 – 1,000||1,001 – 3,000||3,001 – 6,000||6,000 +|
|Pints||35 mins||40 mins||45 mins||50 mins|
|Quarts||45 mins||50 mins||55 mins||60 mins|
How to Make Salsa from Canned Diced Tomatoes
An easy salsa to make with canned diced tomatoes is a classic Pico de Gallo.
Combine canned diced tomatoes with chopped red onion, shredded cilantro, and sliced jalapeno. Add lime juice and sprinkle with salt, pepper, and garlic powder to taste.
This fresh salsa is great with chips or as a topping for tacos or enchiladas!
How to Store Canned Diced Tomatoes
Canned diced tomatoes should be stored in a cool, dark, dry place. A temperature range of 50-70 degrees Fahrenheit is ideal for long-term storage.
Label all jars and rotate the stock so the oldest jars get used first. Do not store home canned items with screw bands attached, as this can create a false seal and make jars more difficult to open.
How Long Will Diced Tomatoes Last?
Diced tomatoes will last for 12-18 months after canning. For the best quality, consume within one year. Opened jars of diced tomatoes should be refrigerated and used within 3-5 days.