Cherry tomatoes can go into jars, but they do not get their own official USDA canning recipe. The tested path is the standard process for whole or halved tomatoes packed in water: peel them, acidify every jar, then process in a boiling water bath or pressure canner for the published times. That matters because cherry and grape tomatoes pack densely, and food safety specialists at Ohio State and Illinois Extension still advise against treating whole cherry tomatoes as a separately tested product. If you want pantry jars, follow the official tomato method exactly or choose a crushed, sauce, pickle, or freezer route instead.
Why Whole Cherry Tomatoes Sit in a Gray Zone
Sweetness is not the same thing as acidity. Modern tomatoes can land near pH 4.6, which is the line between high-acid foods that can go in a water bath and low-acid foods that need pressure heat. That is why every official tomato canning recipe requires added acid, even when you use a pressure canner.
The extra wrinkle with cherry and grape tomatoes is density. Official times were developed on peeled whole or halved slicing tomatoes, not on a jar packed with dozens of tiny fruits. Ohio State asked the National Center for Home Food Preservation about this years ago. The honest answer was that the needed tests have not been done, so whole cherry tomatoes are not advised as their own product. If someone still wants jars of recognizable tomatoes, the guidance is to use the published process for tomato halves and accept that the texture may disappoint.
That is not a scolding. It is the decision most blog posts skip.
What Has to Be True Before You Heat a Canner
Start with firm, ripe fruit from healthy vines. Skip tomatoes that are already split, leaking, or growing on dead or frost-killed plants. Those fruits can carry a higher microbial load and a less reliable pH, which is why extension guides tell you not to can them.
You will also need:
- Pint or quart canning jars, new lids, and clean bands
- A boiling water canner with a rack, or a pressure canner if that is the tool you already own
- Bottled lemon juice or citric acid, not fresh lemon juice
- Optional canning or pickling salt for flavor only
Plan on about 3 pounds of tomatoes per quart, or 13 pounds for a 9-pint canner load. Cherry tomatoes vary in size, so weigh them instead of guessing by handfuls.
Salt does not make the jars safe. Acid and the correct process time do.
How to Can Cherry Tomatoes Using the Tested Tomato Process
If you still want whole tomatoes in the jar, treat them as peeled whole tomatoes packed in water. Do not invent a shorter time because the fruit is small.
Peel first, even when it feels fussy
NCHFP directions start with a peel for a reason. Processing times were built on peeled fruit. Skins can slow heat movement through the jar and they carry more surface bacteria than the flesh underneath.
Work in small batches. Wash the tomatoes, nick a tiny X on the blossom end if it helps, then dip them in boiling water just until the skins split. Cherry skins are thin, so watch closely. Move them straight into ice water and slip the skins off. Trim any bruises and pull out the core if there is one.
Yes, this is the tedious part. It is also the part that keeps you inside a tested method instead of a look-alike method.
Choose raw pack or hot pack on purpose
Raw pack is faster. You fill hot jars with peeled raw tomatoes, add acid, cover with boiling water, and leave 1/2 inch of headspace. The tradeoff is shrinkage. During processing the tomatoes collapse, release juice, and often float, so a jar that looked generous can look half empty after it cools.
Hot pack takes a few extra minutes and usually looks better. Cover the peeled tomatoes with water, boil them gently for 5 minutes, then pack the hot tomatoes and their cooking liquid into hot jars, still leaving 1/2 inch of headspace. You fit more fruit in each jar because some of the shrinking happens in the pot instead of in the jar.
I’d choose hot pack when the goal is a full-looking pantry jar. I’d choose raw pack only when the kitchen is already hot and the harvest will not wait.
Add acid, then process for the full time
Add the acid to each empty hot jar before you fill it:
- Pint: 1 tablespoon bottled lemon juice or 1/4 teaspoon citric acid
- Quart: 2 tablespoons bottled lemon juice or 1/2 teaspoon citric acid
Vinegar at 5% acidity can stand in at 2 tablespoons per pint or 4 tablespoons per quart, but it changes the flavor more than lemon juice or citric acid. A pinch of sugar later, at the table, can soften the edge. Do not cut the acid in the jar.
Remove air bubbles, wipe the rims, apply lids, and process in a boiling water canner with at least 1 inch of water over the lids. For water-packed whole or halved tomatoes at 0 to 1,000 feet, NCHFP times are 40 minutes for pints and 45 minutes for quarts. Add time as elevation rises: 5 extra minutes from 1,001 to 3,000 feet, 10 extra minutes from 3,001 to 6,000 feet, and 15 extra minutes above 6,000 feet.
A pressure canner can process the same acidified product in less boil time, but you still add the acid and you still follow the published pressure for your gauge and altitude. Guessing is how safe tomatoes turn into a science project.
After processing, let the jars rest in the canner for 5 minutes, then cool them 12 to 24 hours. Check seals, remove the bands, label the lids, and store them in a cool, dark place. Home-canned food is a quality product for about a year.
When a Different Method Is the Better Call
Whole jars are not the only way to keep a cherry tomato haul. Sometimes they are not even the kindest way.
| Method | Best use later | What you should know |
|---|---|---|
| Peeled whole tomatoes packed in water | Soups, braises, toast where shape still matters | Follow the official whole-tomato process; no cherry-specific test exists |
| Crushed tomatoes or tomato sauce | Pasta, chili, curry, pizza | Tested recipes exist; a food mill removes skins without peeling each fruit |
| Pickled cherry tomatoes | Snacking, salads, cheese boards | A tested vinegar recipe is high-acid and processes much faster |
| Freezing raw or roasted | Any cooked dish | Fastest option; thawed tomatoes go soft, which is fine for sauce |
Crushed tomatoes and sauce are the quiet winners for a big harvest. You cook the fruit down, mill out the skins, acidify the jars, and process a product that was actually tested. Pickled cherry tomatoes make sense when you want that pop in a salad in January, not a simmered sauce. Freezing wins when you are tired. Wash, dry, freeze on a sheet pan, then bag. No canner, no acid math, no lid anxiety.
Mistakes That Turn Pretty Jars Into Problems
A few errors show up again and again, and they all have consequences.
- Leaving the skins on because peeling feels silly. The published times assume peeled tomatoes.
- Using fresh lemon juice. Its acidity varies. Bottled juice is standardized for canning.
- Shortening the process time because cherry tomatoes are small. Smaller fruit can pack tighter, which is not an argument for less heat.
- Adding oil, butter, or a heap of low-acid extras to a water-bath jar. Those additions change the recipe and can drop the safety margin.
- Canning overripe, moldy, or frost-killed fruit. Freeze those for cooked dishes or compost them.
Floating tomatoes are usually a quality issue, not a safety issue, if you used the right acid and process. A jar that never sealed, leaks, smells off, or looks cloudy is not a quality issue. That one goes in the trash without a taste test.
Frequently Asked Questions
Do you have to peel cherry tomatoes before canning?
For the official whole-tomato method, yes. NCHFP recipes were tested with skins removed. Skins can interfere with heat penetration and they add extra surface bacteria. If peeling a mountain of tiny tomatoes is the deal-breaker, switch to sauce you can mill or freeze the fruit instead.
Can you water bath can cherry tomatoes?
You can water bath an acidified, peeled whole-tomato pack using the published tomato times. You should not treat an untested, skins-on, packed-tight cherry jar as the same thing. Water bath canning only stays in bounds when the product is high-acid enough and processed for the tested time at your elevation.
Why add lemon juice when cherry tomatoes already taste bright?
Taste and pH are different measurements. A Sun Gold can taste candy-sweet and still sit too close to pH 4.6 for a water bath. Bottled lemon juice or citric acid is the insurance policy in every current tomato canning recipe.
How long do home-canned tomatoes last?
Use them within a year for the best quality, and keep sealed jars in a cool, dark cupboard. Once opened, refrigerate the tomatoes in a clean glass container and finish them within several days. Never taste from a jar with a broken seal, a bulging lid, or an off smell.
Can you can green cherry tomatoes the same way?
Green tomatoes are usually more acidic than fully ripe ones, which helps, but they still belong in a tested recipe. A pickle or relish formula is a better match than a ripe-tomato sauce recipe. Do not drop green cherry tomatoes into a random salsa formula and hope the numbers work out.
Put This Week’s Bowl to Work
Decide what you actually cook in January before you wash a single lid. If you live on pasta and soup, crush or sauce the fruit and can that. If you want a sharp little side for sandwiches, look up a tested pickled cherry tomato recipe and follow it line by line. If the counter is overflowing tonight, freeze the extras and can a calmer batch tomorrow.
The harvest is generous. The method should be equally clear.