Harvest and preparation:
When picking rosehips, look for fruit that is bright red and ripe, not green or shrivelled.
Clean the rosehips by cutting off the ends and stems with a knife, and discard any bad fruit.
Put the rosehips in a big saucepan.
Wash the fruit, then fill the saucepan with water to cover it.
Cook for at least 1 hour, until the fruit is very soft.
Try a fork or spoon against the side of the saucepan to check if they are soft; if they are hard, cook them a bit longer.
Processing the fruit:
If you are using a food mill, pass the fruit through the larger holes twice and the smaller holes once.
Now the hard work begins! If you're using one, prepare the food mill.
Add a small amount of the fruit at a time; it is easier to work with smaller batches.
Once you've finished passing all the fruit, put the leftovers (the seeds and peels) in a saucepan with some water and cook them. This helps you extract as much juice as possible.
Pass it through the food mill again. After this, you can discard the seeds into the compost.
Pass the rosehip pulp through the smaller sifter in the food mill.
And then pass the rosehip pulp a third time! Through a thin sieve.
After you pass the rosehip pulp through the sieve, pass the fruit through a cheesecloth or something similar to remove the rosehip's tiny needles.
Once you finish the long process of turning the fruit into a smooth rosehip pulp, weigh it to calculate the sugar you need.
For every kilo of rosehip pulp, I add about 800 grams of sugar and the juice of half a lemon.
Cook and jar the jam:
Mix the rosehip pulp, sugar and lemon juice in a large pot, and bring to a boil. Stir constantly until the sugar is completely dissolved.
Reduce the heat to a simmer for about 1,30 to 2 hours, stirring to prevent burning.
While the jam cooks, sterilise the jars you'll use. I sterilise them by rinsing them and putting them in a low oven for at least 10 minutes, or you can also boil the jars for 10 minutes.
I always prepare more jars than I need. For every kilo of fruit, I will use 4 or 5 350 g jam jars.
How to test if the jam is ready
Once it thickens, check if it is ready by pouring a spoonful of jam onto a cool saucer; if you run a finger through the puddle and it doesn't join together, it is ready.
Once ready, sterilise your jars, then jar the rosehip jam while it is hot and seal them.
After days of hard work, relax and enjoy your delicious homemade rosehip jam!