Canning/Harvest, Recipes

Tomato Paste from skins

In case you haven’t noticed, I hate wasting any part of my fruits and veggies. Every time I process my produce and there is something left over, my mind asks, “what can I do with this? There has to be some use for it.” And, surprisingly, there usually is! With tomatoes, I was left with tomato skins. So I googled it, and found this recipe. I’m glad I found it, because I bottle about 200 lbs of tomatoes in a given year. From just 25 lbs, I got about 22 quarter-pints of tomato paste. I could have had more, but by the time I got to the last batch of bottled tomatoes, the first batch of skins went bad. Note to self: Do the sauce as the skins become available. They don’t last long in the fridge.


Isn’t this perfect sauce? I could have boiled it down a little further into a thick paste, but I left it as sauce. It’s a thick sauce, though.

It is important to wash all the pesticides and bacteria off of your fruit and veggies, especially if you intend to use the skins! There are a few different ways to wash them, so you can pick what works best for you.

Then blanch your tomatoes by sinking into their pot of boiling water (I let the skins pop. It cooks the tomatoes a little longer, but I like how much easier it is) and then sinking them into cold ice-water.


Do whatever you planned with the tomatoes. I make salsa, stewed tomatoes, and just plain bottled tomatoes. When I fill the bottles, I go in sets of 7 to fill my canner, then  I throw any extra tomatoes that don’t fit in the right amount of jars into the pot. It’ll take a little longer to boil out the liquid in the tomatoes, but it is a good use for the extra tomatoes.


I know, it doesn’t look like much, yet, but place all the skins and the extra tomatoes into a pot and turn the stove to medium (avoid any high setting. Burning tomato is not the best way to spend your evening).


When it starts to get all soupy-looking use a stick blender to puree the skins. I simmered the tomatoes about an hour and a half, then pureed them and let them simmer another hour.


you see the good pulp forming? I’m sure it’s overkill, but after the second hour, I blended the tomatoes again, and let them cool slightly (just so I didn’t get burned. The tomatoes were still hot, but not boiling).

Here’s where I deviated from NW Edible. She works her tomatoes through a fine-mesh sieve. I have a fine screen
attachment to my Victorio. It saves a ton of work! I don’t know if you need the fine screen, but I didn’t want to risk it. I ran it through twice. I wanted as much of the tomatoey goodness as I could get. I actually got a ton the second time, too! In the end, I got a bowl full of little straw-like skin leftovers and a bunch of coarse seeds and beautiful tomato sauce in a clean stock-pot.

To season, the measurements all depend on how much sauce you get. my tomatoes were really sour, so I added a bit of honey, some powdered garlic, some onion powder, dried parsley and oregano, and a little salt. Dried seasonings don’t mess with the pH too much, but I wouldn’t want to mix in too much. The flavor will get stronger as it is processed. And you can add more flavor afterwards.

Make sure to get the pH right. This is best achieved with a bit of lemon juice or citric acid. I can’t use the citric acid, though I wish I could (it’s usually corn-derived), so it’s lemon in this house. Add the appropriate amount to each bottle. Also, word to the wise: once I used vinegar. DON’T do it. sure, you wont have to worry about botulism, but you also wont have to eat it. It’s nasty. Oh, and do just the right amount of lemon juice, too. My tomatoes were so acidic this year, adding the lemon juice made my whole body cringe. I’m probably not being safe, but I cut the amount in half. It was the only way I could stand to eat them! I’ve never had that problem before, though. Just with one farmer’s boxes of tomatoes from the local farmer’s market. It might just be the variety he grew.


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