Winter crunch salad
A crispy, fresh vegetarian salad to use up those winter vegetables
Place the onions and sugar in a saucepan, cover and cook over medium heat until soft, about 10 mins. Pour in the red wine vinegar and red wine, then simmer uncovered until the liquid has reduced and the mixture is sticky, about 10 mins more. Add the grenadine syrup and mix well. Leave to cool, then transfer to a sterilised jar and seal.