8 Supplies for Canning Your Summer Tomato Harvest
Preserve your summer tomato harvest. Our guide details 8 essential supplies for safe canning, from a water bath canner to a simple jar lifter.
The kitchen counter is overflowing with ripe, red tomatoes, a testament to a summer of hard work in the garden. The challenge now is to capture that fleeting, sun-ripened flavor before it fades. Canning is the answer, turning today’s overwhelming bounty into a pantry full of delicious meals for the cold months ahead.
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Gearing Up for a Safe Tomato Canning Session
Canning isn’t just cooking; it’s food science in your kitchen. Having the right tools is not about convenience—it’s about safety, efficiency, and success. Using makeshift equipment like standard kitchen tongs or a regular stockpot for processing can lead to broken jars, severe burns, and most importantly, improper seals that allow for dangerous bacterial growth.
Investing in a basic set of dedicated canning supplies transforms the process from a stressful gamble into a streamlined, repeatable method. Each tool is designed to solve a specific problem, from lifting scalding hot jars to ensuring a clean rim for a perfect seal. This isn’t about buying gadgets; it’s about assembling a reliable system that protects both your hard-grown harvest and your family.
Water Bath Canner – Granite Ware 21.5-Quart Canner
Every canning operation needs a processor, and for high-acid foods like tomatoes, a water bath canner is the correct tool for the job. Its purpose is to hold the jars submerged in boiling water for a specific amount of time, killing off spoilers like mold and yeast to make the food shelf-stable. The canner must be deep enough to cover the jars by at least one inch of water while allowing for a rolling boil.
The Granite Ware 21.5-Quart Canner is a classic for good reason. Its carbon steel core heats up quickly and evenly on gas or electric coil stovetops, while the porcelain surface is naturally non-stick and won’t react with food. This model is the perfect size for a standard batch, holding up to seven 1-quart jars, and it comes with the essential canning rack to keep jars off the bottom of the pot.
A crucial consideration is that these canners are not compatible with glass-top stoves, as the uneven bottom can trap heat and damage the cooktop. This is a single-purpose, no-frills workhorse designed specifically for water bath canning. It’s the ideal starting point for anyone serious about preserving their harvest safely and without a massive initial investment.
Canning Jars – Ball Wide Mouth Quart Mason Jars
The jar is the vessel that holds and protects your harvest for months or even years. The quality of the glass, the shape of the jar, and the design of the rim all play a critical role in achieving and maintaining a safe, airtight seal. Using recycled commercial food jars is a common mistake; they are not designed to withstand the repeated heat stress of canning and are prone to breakage.
Ball is the most trusted name in home canning, and their Wide Mouth Quart Mason Jars are the perfect choice for tomatoes. The wide opening makes it significantly easier to pack whole or halved tomatoes, ladle in thick sauces, and clean the jars after use. The quart (32-ounce) size is versatile, ideal for a family-sized portion of sauce or a batch of stewed tomatoes.
Before every use, run your finger along the rim of each jar to check for nicks or cracks, as any imperfection can cause a seal to fail. The jars themselves can be reused for years, but the flat lids are single-use. These jars are the foundation of a well-stocked pantry and are built to last season after season.
Lids & Bands – Ball SureTight Wide Mouth Lids
The two-piece lid system is the key to a safe vacuum seal. The flat lid, with its underside sealing compound, creates the airtight barrier, while the screw-on band holds it in place during the water bath processing. Once the jar cools, the band’s job is done, and a vacuum holds the lid securely sealed.
Ball’s SureTight Lids have been an industry standard for decades, providing a reliable seal that gives you clear auditory and visual confirmation—the signature "pop" as the jar cools. It is absolutely critical to use a new lid for every jar, every time. The sealing compound is designed for a single heat activation; reusing a lid is the number one cause of seal failure.
The bands, however, are reusable as long as they are free of rust and aren’t bent. Over-tightening the band is a common error; it should only be tightened to "fingertip tight" to allow air to escape the jar during processing. These lids are non-negotiable for anyone reusing their Mason jars from a previous season.
Jar Lifter – Norpro Canning Jar Lifter
Moving heavy, water-filled glass jars out of a pot of roiling water is one of the most hazardous steps in canning. Standard kitchen tongs are not designed for this task; they can’t get a secure grip, leading to slips, shattered glass, and dangerous splashes of boiling water. A dedicated jar lifter is an essential piece of safety equipment.
The Norpro Canning Jar Lifter provides a secure, confident grip that makes this step safe and simple. Its vinyl-coated handles contour to the shape of the jar, using its weight to tighten the grip. The design allows you to lift jars straight up out of the canner without tilting, which is important for protecting the fresh seal.
This tool is incredibly straightforward, but it’s worth practicing on a cool, empty jar to get a feel for how it works before you’re handling the real thing. It’s a small investment that prevents the most common and dangerous accidents in home canning. This tool isn’t optional; it’s a necessity for anyone who values their safety and their harvest.
Canning Funnel – Ball Wide-Mouth Canning Funnel
This stainless steel canning funnel set simplifies filling wide and regular mouth jars. The included strainer efficiently removes food residue, and the stackable design ensures easy storage.
A clean jar rim is absolutely essential for a good seal. Any speck of food, grease, or sauce left on the rim can prevent the lid’s sealing compound from making a perfect, airtight connection with the glass. A canning funnel is designed to prevent this exact problem.
The Ball Wide-Mouth Canning Funnel is a simple but brilliant tool. It fits perfectly inside the mouth of the jar, creating a wide, clean target for pouring in hot liquids, chunky sauces, or whole tomatoes. It keeps the sides and, most importantly, the rim of the jar spotless, drastically reducing the chance of seal failure.
Made of durable, heat-resistant plastic, it’s easy to clean and won’t retain odors. While it may seem like a minor convenience, this funnel saves a significant amount of time and frustration during a long canning session. It’s the right tool for anyone who wants to work quickly and cleanly while maximizing their chances of a successful batch.
Bubble Popper – Ball Bubble Remover & Headspace Tool
Trapped air bubbles in a canning jar can lower the quality of the food and, in some cases, affect the processing and safety of the product. Running a tool around the inside of the packed jar releases this trapped air. Furthermore, leaving the correct amount of space between the food and the lid—known as headspace—is critical for creating a vacuum seal.
The Ball Bubble Remover & Headspace Tool is a two-in-one wonder. One end is a thin, flat plastic spatula perfect for sliding down the inside of the jar to release air bubbles without scratching the glass (a risk when using a metal knife). The other end is notched with pre-measured steps (1/4", 1/2", 3/4", 1") for quickly and accurately measuring headspace.
This inexpensive tool eliminates guesswork and prevents you from damaging your jars. Using a metal utensil to remove bubbles can create invisible micro-fractures in the glass, which can cause the jar to shatter under the heat and pressure of the canner. This simple plastic tool is the proper, safe way to handle two critical steps in the canning process.
Lid Wand – Norpro Magnetic Canning Lid Wand
To ensure a good seal and proper sterilization, many canners gently simmer their flat lids in hot water before placing them on the jars. Fishing those hot, flat lids out of the water with tongs is clumsy, and using your fingers is a good way to get burned or contaminate the lid.
The Norpro Magnetic Canning Lid Wand solves this problem elegantly. It’s a simple plastic stick with a magnet on the end. It allows you to lift a single lid out of the hot water, place it perfectly on the jar rim, and never touch it with your hands. The magnet is just the right strength to pick up one lid at a time, preventing them from sticking together.
While some modern canning guidelines suggest that pre-heating lids is no longer necessary, it remains a common practice for many experienced canners who trust the method. For a few dollars, this tool makes the process much cleaner, safer, and more efficient if you choose to follow this step. It’s a quality-of-life tool that feels indispensable once you’ve used it.
Stockpot – Cuisinart Chef’s Classic 12-Quart Pot
Before tomatoes ever see a canning jar, they often need to be cooked down into sauce, juice, or stewed tomatoes. This requires a large, heavy-bottomed, non-reactive stockpot. Using a thin, cheap pot is a recipe for disaster, as the natural sugars in tomatoes can easily scorch on the bottom, ruining the entire batch.
The Cuisinart Chef’s Classic 12-Quart Pot is an excellent choice for this prep work. Its encapsulated aluminum base provides superior heat distribution, preventing the hot spots that lead to scorching. The stainless steel interior is crucial, as it will not react with the high acidity of tomatoes, which can cause a metallic taste and discoloration when cooked in pots made from reactive metals like aluminum or cast iron.
This pot is a true kitchen workhorse that you’ll use for more than just canning. Its 12-quart capacity is large enough to handle a significant harvest of tomatoes without being too unwieldy for a standard home stovetop. This is the right pot for anyone making tomato sauce from scratch and who wants to protect their ingredients from scorching.
Prepping Your Tomatoes for the Canning Pot
The quality of your final product begins long before the jars enter the canner. Start by washing your tomatoes thoroughly. The most important prep step for most recipes is removing the skins, which can become tough and bitter during the canning process.
The easiest way to peel a large batch of tomatoes is to blanch them. Bring a large pot of water to a rolling boil and prepare a large bowl of ice water nearby. Score a small "X" on the bottom of each tomato, then drop them into the boiling water for 30-60 seconds, until you see the skins start to split. Immediately transfer them to the ice bath with a slotted spoon. The shock of the cold water will make the skins slide right off. After peeling, you can core them and prepare them according to your specific recipe—whether that’s crushed, diced, or left whole.
A Quick Word on Headspace and Processing Times
Two of the most critical factors for safe canning are headspace and processing time. Headspace is the empty space between the top of the food and the jar’s lid. For tomatoes, this is typically 1/2 inch. Too little headspace and food may bubble out during processing, preventing a seal. Too much, and the jar may not seal properly as there won’t be enough processing time to drive all the air out.
Processing time is not a suggestion; it is a scientific requirement. You must follow a modern, tested canning recipe from a reliable source like the National Center for Home Food Preservation or a University Extension office. These recipes provide exact processing times based on the food, the jar size, and, most importantly, your altitude. Water boils at a lower temperature at higher altitudes, so processing times must be increased to ensure the food is heated sufficiently to be safe.
Storing Your Canned Goods for Year-Round Flavor
Once your jars have been processed and have cooled undisturbed for 12-24 hours, it’s time to check the seals. Press down on the center of each lid. If it doesn’t flex or "pop," the seal is good. Any jars that did not seal should be refrigerated and used within a few days.
For long-term storage, remove the screw-on bands. This is a critical step. Leaving the bands on can mask a weak seal and trap moisture, causing the band to rust and potentially making a failed seal difficult to spot. Wipe the jars clean, label them with the contents and date, and store them in a cool, dark, and dry place like a pantry or basement. A well-stocked pantry of home-canned tomatoes is a beautiful sight and a delicious reward for a day’s work.
With the right set of tools, canning your tomato harvest becomes a satisfying ritual rather than a daunting chore. This equipment is an investment in safety, quality, and the simple joy of opening a jar of summer sunshine in the middle of winter. Your future self will thank you with every pot of sauce you make.
