Every year we’re faced with the same problem with the produce that we freeze—how the heck are we going to fit it all in the freezer?

Until last year, our freezer space was limited to our fridge freezer (we have a side-by-side fridge/freezer, so it’s a bit more room than a top-only freezer), a big chest freezer at my mom’s place, and (for emergencies only) my mom’s fridge freezer. Every year we try to preserve more and more with the goal of providing a year’s worth of food, and to do that means having the space and equipment. And those three freezers simply weren’t enough.

So, late last summer we bought a smaller chest freezer for our place…and quickly filled it up and ran out of room. About a month or so later, we bought a second smaller chest freezer, which we keep at my mom’s place. That did the trick for last year!

This year, though, we were faced with a record rhubarb haul—115 pounds—which is something we normally store in the freezer. We have SO MUCH frozen rhubarb. The big chest freezer was entirely rhubarb and nothing else, and half our fridge freezer was also rhubarb. We also juice cucumbers and freeze the juice, which filled one of our small chest freezers to the brim. It was fine for a while, but now as the peppers, Brussels sprouts, carrots, and more cucumbers are coming in—all of which go in the freezer—we were faced with the question of if we need to buy yet another freezer.

I was determined not to spend that money, so I thought about what the key problem is.

It’s the rhubarb.

We needed to get some of it out of the freezer.

We had to leave some as frozen rhubarb for my step-dad who makes pies every summer (so he’ll use this summer’s rhubarb for pies when he’s back next summer), we use some for flavouring kombucha, and we have some extended family that want some bags of rhubarb. But, in all, those uses account for maybe a sixth of what we have.

So, I started juicing.

A big batch of that juice went straight into a bucket for some rhubarb wine, but the rest I canned.

Canning rhubarb juice is quite simple and safe; rhubarb is acidic enough on its own that nothing is needed to make it safe for canning. Most recipes call for some optional sugar to counter the tartness of rhubarb, but it’s optional.

So, over the course of two days, I canned about 35 pints (17.5 litres) of rhubarb juice. Now the next challenge is to see if we use all that juice over the coming year, to see if it’s a useful project. I have some ideas of how to use it—but those are at the end of the post!

Step one: Juice the rhubarb

There are two ways to juice rhubarb—both are just as effective, but one is far easier and quicker.

Last year I bought myself a steam juicer. It’s a handy contraption of three interlocking pots—the bottom one boils water, and the steam gets vented into the top pot where the fruit/veg is kept. The steam heats the fruit/veg and eventually the juice bursts from it, dripping and draining into the middle pot. The middle pot has a drain hose built into it to drain the juice.

To juice rhubarb using a steam juicer, simply set the pots up, fill the bottom one with water, fill the top one with chopped rhubarb (fresh or frozen), and turn it on and let it do its work. I find it takes about 45 minutes for the rhubarb to fully juice with a steam juicer.

In the absence of a steam juicer, you can juice rhubarb using a pot on the stove. To do that, simply put twelve cups of chopped rhubarb in a pot along with four cups of water (and you can use this 4:1 ratio for larger or smaller batches). Simmer it until the rhubarb breaks down and the liquid turns a bright pink; this takes about twenty minutes.

Pour the pot’s contents into a jelly bag and let the juice drip out into a bowl or pot below. Let it drain for at least two hours and do not squeeze or compress the bag, or else you’ll get solids coming through and making a cloudy juice. In the absence of a jelly bag, you could likely use a wire mesh strainer lined with cheesecloth. It may take 1-2 hours to fully drain.

Canning rhubarb juice

Rhubarb juice is acidic enough for canning straight as is, but most recipes suggest adding sugar to improve the taste and cute down on the tartness. Knowing what you’re going to use the juice for would help determine if you want to add sugar or not. If it’s for drinking, then I’d recommend adding sugar. But if you’re going to eventually use it for jelly or other recipes that call for rhubarb juice, I’d recommend not adding sugar since the recipe is counting on the juice to be free of added sugar.

I chose to go with no sugar since I didn’t know what my final usage of the juice would be. Besides, I could always add sugar when I open it if I need to.

Safely canning rhubarb juice relies on the juice going into the jars warm, so start by heating the juice on the stove, bringing it to a simmer. If you’re adding sugar, now’s the time to do so, and give it a good stir to ensure all the sugar dissolves.

When it’s thoroughly heated, transfer juice to canning jars, leaving a quarter inch headspace. Wipe jar rims with a paper towel wetted with vinegar and then seal the jar with two part canning lids, screwed to fingertip tight.

Process in a water bath canner for 10 minutes, with the ten minute timer starting once the pot is brought to a full boil. The pot must boil for the entire ten minutes. When the ten minutes is over, remove the pot from heat and let it sit for five minutes. Then carefully remove jars using a jar lifter and place them on a thick towel on a table or counter overnight to cool and seal. In the morning, check that jars have sealed (lids bend downward). If they’re sealed, they can be stored on a shelf for a year or more before being consumed; if any jars are not sealed, put these in the fridge and use them first.

Using rhubarb juice

There are a number of uses for rhubarb juice that come to mind:

• Use juice to make rhubarb ginger gin using my recipe here. Just pour in rhubarb juice instead of chunks of rhubarb. I haven’t made this from juice yet, so you will need to experiment with how much juice to add. It’s best to start with less than you think you need since you can always add more juice, but you can’t remove juice if you put in too much. This recipe alteration also lets you reduce the sugar if you want a dryer gin, since you’re not relying on the sugar to draw the juice out of rhubarb.
• Use juice to make rhubarb wine. Instead of letting the sugar and rhubarb sit, just use rhubarb juice and all other ingredients (including sugar) in the same proportions. I’ve found rhubarb wine made from juice rather than letting rhubarb and sugar sit results in a much smoother and more pleasant wine.
• If you added sugar to your rhubarb juice, you could drink it as-is or mix it with other juices for a tasty blend.
• Whip up a batch of rhubarb jelly.
• Make a batch of rhubarb simple syrup—equal parts sugar and rhubarb juice—and use it for tasty cocktails and youth-friendly mocktails. We’ve also used rhubarb simple syrup in place of plain simple syrup for other cocktail and baking recipes.