This recipe was kind of time consuming and messy but it ends up making what you might call a syrup or drink concentrate - you need to dilute it with at least the same amount of water (or more) before drinking or it's very strong. Great syrup for champagne or cocktails too! I made this recipe x4 to get 1 gallon of drink (including the water addition)
Homemade Raspberry Cordial
500g fresh or frozen raspberries
500g caster sugar
3 Tbls red wine vinegar
Mix raspberries with caster sugar in a saucepan.
Add red wine vinegar.
Heat it gently on the stove whilst mashing it with a potato masher. (I ended up using a hand blender).
Once it is gloopy and thick then press through a sieve to remove the seeds. You need to do this in very small amounts (like one soup scoop) at a time and remove the seeds each time once the liquid has fallen through, otherwise you end up clogging it and having to start again.
This process is very time consuming! The first sieve I used was letting the seeds through somewhat so make sure you use a very fine sieve.
Pour the strained liquid back into the saucepan and bring to the boil for two minutes.
Pour into a sterilized bottle and store in the fridge for up to four weeks.
Add at least equal amounts of cordial to water (even more water if desired) before drinking.