by Tammy Taylor
*contains an affiliate link
Now y’all know that I love me some blueberry… ANYTHING. I’ve planted blueberry bushes to keep myself in steady supply of those delicious & oh-so-nutritious orbs but until those plants grow large enough to satisfy me I’m stuck using purchased frozen berries. Recently I realized that I had two bags of blueberries in the freezer. So I decided to make blueberry jam with some of them. I searched around online & decided on this recipe I found at Food.com since it didn’t contain any added pectin. Of course as is the norm for me, I amended the recipe to suit our tastes.
I’ve read that it’s not wise to double the recipe batch when making jams. Unfortunately I found out firsthand when I didn’t heed that warning. So I stuck with the quantity of berries shown in the recipe. First I measured out the ingredients: 6 cups of blueberries, 3 cups of sugar, 1/4 cup lemon juice squeezed from the lemon, a couple of teaspoons of finely grated lemon rind and a teaspoon of vanilla extract.
I chose a large stockpot to cook my jam because as you know when a sugar mixture begins to bubble & boil it can splatter causing painful splatter burns. So my larger stockpot and a long wooden spatula were my tools of choice today. I also washed my canning jars and lids and placed the jars in my oven set to 220 degrees to keep them hot. Then I boiled some water, removed it from the heat & placed my rubber Tattler seals into the water to soften them. Lastly I placed a few metal spoons in the freezer to use to test my jam – a super-cold spoon will cool the hot jam quickly so you can test for sheeting. Now I’m finally ready to begin making the jam!
I read that the rind of a lemon contains lots of natural pectin so after mixing all the ingredients in my stockpot I cut the leftover lemon rind into thick strips & tossed the strips into my stockpot with the other ingredients. (I’ll remove these strips before ladling the cooked jam into my jars) I brought the mixture to a rapid boil. After about 20 minutes I tested for sheeting on one of the spoons from my freezer. I scooped up some jam with one of the cold spoons and held the spoon at an angle to see if it coated the spoon or simply dripped off. Humm… still looks just a little too thin for me. It wasn’t quite ready yet.
After about 5 more minutes of boiling my jam I noticed the mixture seemed to be getting thick enough that when I stirred it I could temporarily see the bottom of the pot before the jam covered it again. So I decided it was time to test it again and it was about as thick as I wanted it to be. Notice how the jam sheets along the surface of the cold spoon? Since I’ll primarily be using my jam stirred into my daily homemade yogurt for breakfast I don’t want it to be too thick. Twenty-five minutes of boiling was about right for me.
Now I ladled the hot jam into my clean & hot canning jars, wiped the rim to remove any drips that would keep the jar from properly sealing and attached my 2-part tattler lid/seal, tightening it finger-tight with a regular metal canning jar lid. I processed 3 of the 4 jars in a 5-minute hot-water bath to seal them. The remaining jar went into the fridge to be used right away.
The jam turned out delicious and I loved how inexpensive it was & the fact that both the jelly jars & canning lids are reusable. I bought a supply of reusable canning lids and seals awhile back & I really have given them a workout – I’m pleased to report I’ve never had a failed seal with them. I had always hated the waste of throwing the canning lid away after a single use and I love that I don’t have to waste the lid each & every time I do some canning as these * Tattler Lids are reusable for quite some time. So this jam is a double win – good for me, good for the environment.
Now I must note here that I’m sharing how I preserved my jam and it worked great. But different canners require different procedures. Even your area above sea level affect your specific procedure. For safe & specific directions be sure to consult your canner’s manual and also be sure you read the USDA’s recommendations on safe canning and follow their directions closely – food safety is important!
Now here’s the recipe as I amended it from the original:
Lemon Blueberry Jam Recipe
- 6 cups blueberries
- 3 cups sugar
- Juice of 1 lemon (or 1/4 cup lemon juice)
- 2 teaspoons finely grated lemon rind
- 1 teaspoon vanilla extract
In large stainless steel or enamel pot, blend with a stick blender or crush with potato masher 3 cups of the blueberries. Add remaining berries, sugar, lemon juice and grated lemon rind.
Bring to a boil over medium-high heat and boil for 20 to 25 minutes or until thick, stirring often. When the jam is as thick as you like, remove from heat, skim off any foam & stir in vanilla extract.
Ladle hot jam into hot jars to within 1/4″ of top rim, wipe the rim clean & attach lids.
To preserve jam use preferred safe preservation method. (I used hot water bath at 5 minutes)
Yield – four 1/2-pint jars
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* A word about our Affiliate Link – We are currently enrolled as an Amazon Affiliate. Occasionally I will insert an affiliate link into one of my posts if I think it may be of interest to you. Both of the items linked in this post really help me in my canning endeavors! I receive nothing from the manufacturer, but I love my Tattler lids & thought you might too. If you click on any of my affiliate links and buy something (almost anything, not just what was linked) I get a small referral percentage from Amazon. But here’s the really important part – the price you pay for your items is UNCHANGED.
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