Blackberry vinegar, is a sweet and sour, thick-ish vinegar that works especially well with fruit, sweet root vegetables and goat's cheese. I use it as I would balsamic – simply tossed into a salad with olive oil, salt and pepper, with perhaps a little extra blackberry vinegar drizzle at the end.
So far, my favourite use for the blackberry vinegar has been in a beetroot and orzo salad with goats cheese, spinach and pine nuts, tossed with olive oil and a good drizzle of blackberry vinegar. This same approach works equally well with any combination of grain, fruit and nuts. I especially love strawberries, peaches or figs with toasted pistachios or cashews.
You could also use the blackberry vinegar to make a vinaigrette – I’ve been meaning to adapt this raspberry vinaigrette recipe but so far haven't been able to diverge from enjoying the blackberry vinegar in its pure form.