Cauliflower mousse with apple compote, pickles and parsnip crisps

By Ruth Hansom From Saturday Kitchen Ingredients For the apple compote 2 green apples, peeled and julienned 1½ tbsp cider vinegar 1½ tsp caster sugar ½ tsp fresh grated horseradish salt For the pickles 50g/1¾oz caster sugar 50ml/2fl oz cider vinegar 1 garlic clove, …