Start off by sterilising 5 x 300 ml jars (see notes below) and put 3 saucers into the freezer for testing set.
Add the strawberries to a preserving pan or similar and crush with a masher.
Add the sugar and lemon juice and heat on low until the sugar has dissolved, stirring regularly with a wooden spoon (any crunching noises means the sugar hasn’t yet dissolved).
Snip or pull the Elderflowers from the stems and stir into the strawberries.
Then turn up the heat and bring the pan to a rolling boil and stir constantly to avoid burning.
After 14 minutes of boiling take the pan off the heat place a few drops of the hot jam onto a chilled sauce and put into the fridge for 30 seconds.
Remove and push your finger through the jam. If a gel like crinkle occurs then the jam is ready, if not continue boiling for another 2 minutes at a time until a set is reached, repeating the test.
Once ready, pot up the jam into the hot jars and seal immediately.
Once cool, store in a cool dark place and keep in refrigerator once opened.
Makes a little over 4 x 300 ml jars.