Prepare your equipment: Gather a large pot with a fitted lid, canning jars, lids, bands, canning rack, jar lifter, funnel, bubble remover, and kitchen timer.
Select high-acid produce: Choose fruits or tomatoes for water bath canning. Ensure they are fresh and blemish-free.
Wash and sanitize: Clean the jars, lids, and bands in hot soapy water. Sterilize them by boiling in water or using a dishwasher.
Prepare the ingredients: Wash and prepare the produce, peeling or cutting as needed.
Fill the jars: Place a funnel on top of a warm jar. Fill with hot food, leaving recommended headspace.
Remove air bubbles: Use a bubble remover to release any trapped air bubbles.
Wipe jar rims: Ensure jar rims are clean and free from food residue.
Apply lids and bands: Place lids on jars and screw bands fingertip tight.
Process in a water bath canner: Place jars on a canning rack in a large pot of boiling water. Process for recommended time, adjusting for altitude if necessary.
Cool and test seals: Remove jars and let them cool undisturbed for 12 to 24 hours. Check seals by pressing the center of the lids.
Store and label: Store properly sealed jars in a cool, dark place. Label jars with contents and date.