I found a recipe for jam that does not contain heaps of sugar (like all shop bought jam does) and it is very easy and cheap to make. I found it on: http://www.thekitchn.com/how-to-make-easy-chia-jam-with-any-fruit-222310
I have written the recipe out for you to quick scan, there is a lot of information about chia seeds in the website link so I do recommend reading it as well.
How To Make Easy Chia Jam
What You Need
2 cups chopped fruit
1 to 2 tablespoons lemon juice, to taste
1 to 2 tablespoons honey, agave, maple syrup, or sugar, to taste
2 tablespoons chia seeds, plus more if needed
Measuring cups and spoons
Potato masher, optional
Glass jars or other storage containers, for the finished jam
- Prepare the fruit as needed: Remove stems, pits, seeds, and skin, as needed. Chop large fruits into small pieces. Berries can be left whole.
- Cook the fruit until it starts to break down: Transfer the fruit to a saucepan and set over medium heat. Cook until the fruit breaks down and becomes syrupy, 5 to 10 minutes. Mash the fruit with the back of a spatula or a potato masher, leaving it as smooth or as lumpy as you like.
- Stir in the honey and lemon juice: Off the heat, stir in 1 tablespoon of the honey and lemon juice. Taste and add more honey or lemon juice to taste.
- Stir in the chia seeds.
- Let stand 5 minutes, until thickened: This won’t quite reach the firm consistency of regular jam, but it will noticeably thicken. If you’d like a thicker consistency, especially with very juicy fruits, stir in more chia seeds 1 teaspoon at a time.
- Transfer to a jar or other storage container: Once the jam has cooled to room temperature, transfer it to a jar or other storage container. Store in the fridge for about 2 weeks. The jam will thicken further and become more set once completely chilled. The jam can also be frozen for up to 3 months; thaw in the fridge before using.
- No-cook chia jam: Mash the fruit with a fork until pulpy and juicy, then stir in the rest of the ingredients. You can also combine all the ingredients in a blender, or use an immersion blender, and blend until the jam is completely smooth. Uncooked chia jam tends to be a bit looser and more sauce-like than the stovetop version; add extra chia seeds if you’d like a thicker consistency.
- Getting rid of visible chia seeds: If you’d prefer not to have visible chia seeds in your finished jam, puree the jam in a blender or with an immersion blender. If you’d like to keep a somewhat chunky texture, blend just a portion of the jam with the chia seeds, then stir it back in with the rest of the jam.