11/13/2025
Did you know you can freeze tomatoes now and can them later? Freezing is a great way to buy yourself time during harvest season—and it makes prep super easy.
Here’s how to go from freezer → canner safely:
1. Freeze First, Peel Later
One of the perks of freezing tomatoes whole:
Just wash them and toss them into freezer bags—skins on, no blanching needed.
When you’re ready to can, run them under warm water or set them in a bowl to thaw slightly.
The skins will slip right off!
2. Turn Them Into Your Favorite Tomato Base
After peeling, you can:
Dice them
Crush them by hand
Cook them down into sauce or puree
Freezing does change the texture, so they work best in cooked products rather than fresh salsas.
3. Follow Safe Canning Practices (SUPER IMPORTANT!)
Tomatoes are borderline low-acid, so safety matters. Keep it safe by following these essentials:
✔️ Always acidify your tomatoes (bottled lemon juice or citric acid) — frozen or fresh, this step is non-negotiable for safe canning.
✔️ Use tested recipes from trusted sources like the National Center for Home Food Preservation or your local extension service.
✔️ Choose the right canner:
Whole, crushed, or juiced tomatoes: Water bath or pressure canner (per a tested recipe).
Tomato mixtures (with veggies/meat): Pressure canner only.
✔️ Follow the jar prep, headspace, and processing times exactly as the tested recipe instructs.
✔️ Adjust for altitude—safety depends on it!
Why it works?
Freezing doesn’t harm canning safety—as long as you thaw, prep, acidify, and process using a tested canning procedure. It actually makes peeling easier and helps break down the tomatoes for quicker cooking.