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Is Making Homemade Tomato Paste Worthwhile With Very Cheap Tomatoes?

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I’ve written a few times already about how cheap produce has been locally lately. Tomatoes are among the vegetables that have been sold for 10 cents per pound at my local grocery store.

Since I wanted to take advantage of this pricing, and there’s only so long produce can last in my refrigerator, I’ve been doing some canning, including (so far) salsa, pineapple, and pickles. 

I regularly buy tomato paste, and the price of it has gone up drastically lately. While a can of 2 cups of concentrated tomato paste used to go for around $1.50, then crept up to $1.75 or so, it now is $2.80-$3.40 per can!

For someone who uses tomato paste for so many things and so frequently, from pasta to meat sauce to chili to sloppy joes to pizza… the price difference is really frustrating.

So when I saw that tomatoes were 10 cents a pound, I said that it must be worth it to make my own tomato paste. I remembered from the last time I tried making tomato paste that it needed to cook down a lot, but I never calculated how much, and never fully got to the tomato paste stage. So it was just a guess that it would be worthwhile. Because it’s freaking 10 cent a pound tomatoes.

Well… lets just say many days later… I have my results.

Why many days later? 

Because making tomato paste is a many step process, most of them either labor intensive or needing constant supervision, so I needed to space it out and keep the stuff in my fridge in the meantime, since I had only so many hours per day.

I started out with 16.5 lbs tomatoes that cost me $3.45, more or less the amount one can costs now.

First step- blanch the tomatoes to peel them. 

  • Wash the tomatoes.
  • Make an x on each tomato
  • Bring water to a boil
  • Make ice water
  • Cook tomatoes a few at a time for 30-60 seconds
  • Take each tomato out and put in ice water bath
  • Remove tomatoes from ice bath and find container to put them in
  • Make new ice water bath because the water heated up from the multiple batches already
  • Find another container or two since there isn’t room in your first one for the entire 16.5 lbs
  • Peel the tomatoes

Second step- remove the seeds and juices and hard part where the tomato attaches to the stem

  • To not waste all this, do this over a bowl
  • Strain out the seeds from the liquid using a collander
  • Realize that even so many seeds fell through
  • Do it again with a cheesecloth this time
  • Use the liquid, if you want. I used it to cook rice. 2 of my kids didn’t love it, but one kid and I enjoyed it.

Third step- blend up the peeled and deseeded tomatoes
  • Preferably in as wide a pot as possible so you have as much surface area as possible for steam to escape, bring the blended tomatoes to a simmer
  • Mix frequently
  • Very frequently
  • If you don’t it will burn on the bottom 
  • Even if it doesn’t burn, it will make giant bubbles that will burst and try to splatter everywhere if you don’t mix it enough to release trapped steam
  • This will take hours and hours and hours, which you might want to divide over separate days so you don’t need to stand over the stove that many hours each day, because you have a life

Fifth (and optional) step- add sugar

  • My bought tomato paste has sugar in it, and says that it is 93% tomatoes, so I measured how many cups of tomato paste I had and by volume added sugar so it would be 7% tomatoes. It was a little less than half a cup of sugar. 
  • Realize you made a mistake because it is more sweet than you’d intended, but still not bad, so it must have been by weight, not volume

Sixth- boil some more

  • After opening some tomato paste for pizza you were making, because gosh darnit you aren’t going to use this tomato paste yet because you need to finish it and measure it first, you compare how concentrated it is to how concentrated what you made is, and realize that it’s nowhere near as concentrated
  • Boil it some more, stirring a lot, being even more careful because the sugar in it makes it even more likely to burn
  • Decide that you’re done, that even if it isn’t as concentrated as the 28 bx (whatever that means) tomato paste as you usually buy, its probably close to the 22 bx you used to buy (but can’t find anymore)

Seventh- if you’re trying to figure out if this is worth it- measure it….

  • This was a little annoying because I was putting it into jars and measuring it at the same time, which meant more work, especially since it was hot
  • See how much you actually ended up with… that was less concentrated than what you usually buy, and had more sugar than you usually buy…

Realize that you ended up with only 4.5 measly cups of tomato paste after all that!!!!!!!!!!!!!!!!!!!!!!!!

I spent $3.45 on tomatoes… and 12 cents on sugar… Total $3.57….

For what is essentially 2.25 cans of tomato paste, that each cost me $2.80… but since it wasn’t as concentrated, more like 2 cans worth, if not less

So let’s do the math.

Or not.

Just a guesstimate. 

For the many, many, many hours worth of work spread over many days…

I basically got 2 cans of tomato paste for the price of $1.5 cans.

HAHAHAHAHAHAHA!!!!

I never felt more like I wasted my time.

But it wasn’t a complete waste of time.

I learned my lesson and am now passing on that lesson to you.

It doesn’t matter how cheap your tomatoes are, it isn’t worth making homemade tomato paste.

Yes, each type of tomato has a different ratio of water to solids, so you’ll get more tomato paste yield from other types of tomatoes… but unless you’re growing your own tomatoes and specifically planting that species, if you’re just dealing with supermarket tomatoes you’re probably not getting that type.

Last step- can the tomato paste so you’ll at least have something shelf stable to show for all your work

  • Bring the water to a boil in your water bath canner
  • Process for 40 minutes
  • Remove from water bath
  • Let cool
Voila.

A gajillion hours for 4 small jars (each 1-1.5 cups worth) of shelf stable tomato sauce.

Wasn’t that fun?

Have you ever made homemade tomato paste? How was it? What was your yield like?
Do you plan on ever making homemade tomato paste or are you a masochist?

Do you enjoy posts in which I poke fun at myself and what I did, like this? 

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