preserving

Roasted Tomato Paste for a Lazy Canning day

The garden is in full swing, and while I’m doing the best I can, production is quickly out-pacing me.

I typically offer up the extra bounty to our neighborhood, but I think we’ve reached the point where even they groan when they see my text messages pop up. I have been canning every week, but it’s difficult to get the energy to stand over a hot stove with record heat blanketing Louisiana. I ordered a dehydrator with the intention of broadening my horizons and saving the gigantic herb garden before this heat does it in. But that doesn’t solve the problems of today.

Yesterday, I still had a ton of tomatoes in need of processing, and I didn’t have the time or mental energy for lots of hands-on prep work, so that excluded Roasted Tomato Lime Salsa, though I did make some last week. I also did not have enough tomatoes to make marinara, so I turned to my cookbook library and found Roasted Tomato Paste in The All-New Ball Book of Canning and Preserving. I initially balked, because 12 pounds of tomatoes for four, 4-oz jars? Psssssh. But with a Heathen home to help me, I could knock out prep in 20 minutes. However, because both the tomatoes and resulting paste slow roast, it’s still a seemingly longer project, but it was also 90 percent was hands-off. I reckoned that the tomatoes needed to go, so a paste experiment it was.

We started by coring/seeding and quartering the tomatoes, then roasting them in the oven:

Then we pureed them in the food processor, spread the puree on sheet pans and roasted that, stirring every twenty minutes or so until we reached the right color and consistency (following photos are 1-freshly pureed, 2-halfway through, 3-final paste):

Finally, we water-bath canned per the recipe.

It worked out well, but by all that is holy, learn from my mistakes. Line your sheet pan with heavy duty foil. Mine is currently on a fourth round of soaking and I’m about to take the oven cleaner to it. Le sigh.

So, overall, this recipe is long on time but short on hands-on effort. Sure, the yield was small, but those tomatoes were destined for the compost bin if I didn’t figure out a plan that worked with my timeframe. That’s the key for me for successful canning; pivoting when you need to and managing your time. I salvaged the tomatoes but didn’t wreck my other goals for the day.

As always, I will include my usual canning advice, which can be found in this post, and this one. Canning is the very essence of science of food safety, so unless you want to live on the edge via death-by-botulism-roulette, follow professionally developed and tested recipes from trusted sources.

And just when I finished this project, the Husband announced his intention to harvest another round of tomatoes tomorrow, in the 105 degree heat. That dehydrator can’t get here fast enough, I’ll tell y’all that.

Roasted Tomato Paste

Print Recipe
Prep Time 30 minutes
Cook Time 8 hours
Servings 4 4-oz jarrs

Ingredients
  

  • 12 pounds Roma tomatoes, stems removed and halved lengthwise
  • 1 tablespoon salt, plus more for taste
  • 1 teaspoon citric acid

Instructions
 

  • Preheat oven to 350 degrees F. Remove seeds and pulp from tomato halves with a spoon, then cut halves vertically. Place tomato quarters on three rimmed baking sheets lined with foil. Sprinkle with salt.
  • Bake tomato quarters for 1.5 hours, checking every 20 minutes after the 40-minute mark to prevent burning. Remove from oven and cool slightly.
  • Process tomatoes in a food processor in batches until smooth. Transfer to a bowl and stir in citric acid. Add more salt if needed for taste.
  • Return the puree to one sheet pan and spread out evenly. Bake at 350 F until tomato mixture is deep red and very thick, stirring every 20 minutes (could be anywhere from 2-3 hours based on your oven and water content of your tomatoes).
  • Spoon mixture into hot sterilized jars, leaving 1/4-inch head space, remove air bubbles as best you can, wipe rims, and apply lids and bands. Process for 40 minutes in boiling water, adjusting recipe for altitude. Remove jars from heat to cooling rack and let sit undisturbed for 24 hours. Inspect seals and refrigerate any jars that failed to seal for short-term use.
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Roasted Tomato-Lime Salsa (For Canning) the Attack of The Garden Tomatoes

Ohhhhh y’all. After I came back from vacation, I found myself staring down about 30 pounds of tomatoes that were ready right-freaking-then. Thus ensued days and days of canning.

Though I also made vats of marinara and vodka sauce base, the majority of that week’s harvest went toward Bear’s favorite recipe: Roasted Tomato-Lime Salsa. This recipe comes from one of my top four canning resources, Foolproof Preserving from America’s Test Kitchen. I love this book for clarity of instruction, and the “whys” of the steps. And, in general, any ATK recipe has thorough research behind it.

Some quick notes before I share the recipe:

  • If you need a basic knowledge of canning, the ATK book, and the Ball Blue Book are excellent guides. The Ball Blue Book is where I started, and I think it’s a staple resource that belongs in every kitchen. If you are a canning newbie, get your mitts on one. Also, America’s Test Kitchen’s site is a treasure trove if you need tested techniques on pretty much anything.
  • This recipe calls for commercially bottled lime juice. Don’t clutch your foodie pearls, there’s a reason for that. Fresh limes can vary wildly in their pH, while bottled juice remains consistent. The pH is what keeps the food safe, so unless you want to become a human science experiment, follow the recipe.
  • Speaking of which, FOLLOW THE DANG RECIPE. Canning recipes are literally science-based, tested procedures that safely preserve food. This isn’t the time for “a little of this…some of that…”
  • This recipe can be doubled. Just broil the veggies in batches, and simmer it a little longer, like 20-25 minutes.
  • Remember that all broilers and stovetop burners vary astronomically in output. This is the time you need to be a wee bit more observant, rather than trusting a recipe time range. Never leave a broiler unattended, unless you are hell-bent on meeting your local firemen.

Roasted Tomato-Lime Salsa (Canning)

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Servings 4 half-pints

Ingredients
  

  • 2-1/2 pounds Roma tomatoes cored and halved
  • 1 onion sliced into 1/2 thick rounds
  • 5 jalapenos stemmed and halved lengthwise
  • 6 cloves garlic peeled
  • 1/3 cup bottled lime juice
  • 2-1/2 tsp salt
  • 2 tsp sugar
  • 2 tsp chopped fresh cilantro
  • 1 tsp ground cumin

Instructions
 

  • Get your canning set-up arranged with jars sterilized and simmering in your water bath canner, lids hanging out in warm water, and all your gear together.
  • Cover a sheet pan with foil and place tomatoes and onions, cut side down on it. Broil the veggies until the tomatoes are well charred (anywhere from 10-15 minutes). Remove the pan from the oven and offload the veggies into a bowl. Add the jalapenos, cut side down, and garlic to the empty sheet pan and broil until jalapenos are also charred, 8-10 minutes.
  • Transfer the jalapenos, garlic, half of the tomatoes, and half of the onions to food processor and pulse until it's a thick puree. Transfer to Dutch oven. Transfer remaining broiled tomatoes and onions to the food processor and pulse into ½-inch pieces, 2 or 3 pulses; add to Dutch oven.
  • Stir in lime juice, salt, sugar, cilantro, and cumin. Boil over medium-high heat, stirring often, until salsa has thickened slightly, probably 8-15 minutes depending on your stovetop.
  • Ladle the hot salsa into the hot jars, leaving ½ inch headspace. Use a wooden skewer or popsicle stick to remove air bubbles. Wipe rims clean, top jars with warm lids, screw on bands until fingertip tight, and return jars to canner.
  • Bring water in canner back to a boil. Process jars for 15 minutes for up to 1,000 feet, 20 minutes for 1,001 to 3,000 feet, 25 minutes for 3,001 to 6,000 feet, or 30 minutes for 6,001 to 8,000 feet. Remove jars to a cooling rack and let sit undisturbed for at least 8 hours. Check seals and store. If any failed to seal (hey it happens to even the most experienced canner), grab some chips and have a movie party. Don't forget to label them, and you can decide yourself if sharing is caring. According to Bear, that would be hard no.
Tried this recipe?Let us know how it was!