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Blackberry Lemon Jam

5 from 1 vote
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Blackberry lemon jam is so gorgeous and tasty! It's insanely easy to make that you'll never have to buy store-bought again!

So you know how as you get older, the conversations you NEVER thought you’d be having, you’re having? Like, cleaning products and how awesome this brand smells over this brand or how ‘obsessed’ you are with this laundry detergent because it smells like a field of lavender. Or how about what awesome kitchen gadget you snagged up at the outlets? Or being overly ecstatic about getting new window treatments or bed linens? Every time I have an adult conversation, I end up laughing because I’m like, “this is seriously what I’m talking about now?” when I remember like five years ago I’d be all about which bar I want to go to that night or which concert I want to attend that summer. As I’m writing this, I’ve got the biggest smile on my face because I’m just laughing at myself for laughing at my parents when they talked about this stuff when we were growing up. “Ugh why do you guys even care about this paint color? It’s not a big deal.” Umm, I would tell my seven year old self that IT IS a BIG deal. Haha

On the same note, I bought myself a label maker yesterday. I had been wanting one for a while (hahaha again, I can’t even picture me saying this five years ago) and I finally found one that was reasonable and I put it in my Amazon cart this weekend but didn’t purchase it yet. I was perusing Amazon again yesterday and the price dropped $10!!! I snagged up the label maker for $9.99!! Now I’m cracking up again cause I’m so stoked that I scored a LABEL MAKER for $10. Oh god. It’s just so funny what makes your days when you get older. And then when we have kids, I’m sure my conversations will be all about poop, sleeping, and what stroller is the safest. #perspective…however, I will say that I can’t wait to label everythingggg. It’s like fueling my OCD tendencies even more, ha!

Blackberry lemon jam is so gorgeous and tasty! It's insanely easy to make that you'll never have to buy store-bought again!


I adore the color of blackberries when they cook down and when they’re made into jam. It’s such a gorgeous deep red color. Isn’t it funny that blackberries turn a deep red color when cooked when their outer skin is purple-ish?

I made this blackberry lemon jam with lemon essential oil. A little goes a looonng way. These essential oils are very potent. I think I used about two drops and it was perfect! We’ve been spreading this on all our peanut butter sandwiches and on water crackers. I’ve had a hard time not eating it by the spoonful. It’s definitely one of my favorite jams to make! Now, I don’t can because I don’t know much about it but this made two 16-ounce mason jars and they have been keeping fine in the fridge for over two months. I can’t attest to longer than 6 months but so far ours have been fine for two months. Just something to keep in mind. However, if you do know how to can, you can absolutely use this recipe and can it! :)

Blackberry lemon jam is so gorgeous and tasty! It's insanely easy to make that you'll never have to buy store-bought again!

Blackberry Lemon Jam

Blackberry lemon jam is so gorgeous and tasty!
5 from 1 vote
Prep Time: 5 minutes
Cook Time: 30 minutes
Total Time: 35 minutes
Servings: 16
Author: Julie Chiou
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  • 2 pounds (907 g) blackberries, fresh or frozen
  • ½ cup (100 g) granulated sugar
  • 1 tablespoon water
  • Juice of 1 lemon
  • 2 drops lemon essential oil, see note

The default measuring system for this website is US Customary. Unit conversions are provided for convenience and as a courtesy only. While we strive to provide accurate unit conversions, please be aware that there may be some discrepancies.


  • In a medium pot over medium-high heat, add blackberries, sugar, water, and juice of 1 lemon.
  • Cook down the blackberries until they reduce down and start to burst, stirring often. Turn down the heat to medium-low and use the back of a wooden spoon or spatula to press the berries against the side of the pot to burst the berries.
  • Once the berries have reduced down and the mixture has thickened, about 30 minutes, remove pot from heat and let cool for 10 minutes.
  • Add the lemon essential oil and stir to incorporate.
  • Evenly divide jam mixture into mason jars and store in fridge for up to two months.

Recipe Notes

The fresh lemon juice will help thicken the mixture because of its natural pectin. If you don't like the consistency of this jam, you can add pectin powder to thicken up the jam some more.
You'll want to add the lemon essential oil into the mixture when it's cooled because otherwise the heat will destroy the benefits of the oil. If you do not have lemon essential oil, I would use 1/2 teaspoon of lemon extract to start and adjust to taste!


Serving: 1 tablespoon | Calories: 16 kcal | Carbohydrates: 12 g | Protein: 1 g | Fiber: 3 g | Sugar: 9 g

This website provides approximate nutrition information for convenience and as a courtesy only. Nutrition information can vary for a variety of reasons. For the most precise nutritional data use your preferred nutrition calculator based on the actual ingredients you used in the recipe.

Course: Jam
Cuisine: American
Keyword: homemade jam, jam recipe

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Recipe Rating

Linda Zeller

Saturday 21st of December 2019

Am going to try this today! Sounds yummy! However, how much does the recipe make? You say 15 servings but would like to know in cups so I know how much to buy. Thanks.

Julie Wampler

Thursday 26th of December 2019

it makes about 1 cup


Friday 30th of August 2019

Blackberries are .99 today I might try it. Are the seeds bothersome? Wondering they cook down some and get sof

Julie Wampler

Saturday 31st of August 2019

they're bothersome if you don't like seeds, I guess. they don't really soften and cook down; it's a lot of texture.


Thursday 14th of January 2016

Girl on a college budget here... but I still want to make this! Can I do without the lemon essential oil/ lemon extract and still get the lemon flavor by maybe just adding juice from an additional lemon? Or will that still not give the lemon flavor and/or make it too think bc of natural pectin?


Friday 15th of January 2016

You can do it without the lemon essential oil but I would definitely do it with lemon extract because if you add in another lemon, it might not be enough. Lemon extract is more potent :) OR you could try without the lemon extract and put in the zest of the lemon and juice in another lemon and see how that works. It wouldn't be too thin; it should thicken as lemon juice is a natural pectin so it helps with thickening.


Saturday 18th of April 2015

I am obsessed with the jar you have that awesome jam in. Where can I find it?


Saturday 18th of April 2015

It's a Weck jar. You can get them online! I bought mine at World Market.


Thursday 9th of April 2015

Oh geez, I've always been an old soul in a young body. A few of my friends got married and had children before me so I felt like I was always talking about things before my time! haha