Coleslaw is one of my favourite garnishes or salads. You can use such a wide variety of vegetables and they all give a different layer of taste and texture. Have a good play around to find your own favourites but this is my preferred mix. Folding in a flavoured mayonnaise lifts it to new heights. I use garlic here, but a lemon-mayonnaise coleslaw will go well with fish, and a herby one is delicious alongside roast chicken.