Crab, apple and fennel tostada - Estrella Galicia UK

Ingredients

• 125g brown crab meat
• 65g cream cheese
• 1/2 tsp hot smoked paprika
• Zest and juice of 1/2 lemon
• Sea salt and freshly ground black pepper
• 6 slices of sourdough bread, to serve
• 200g fresh pickled white crab meat
• Small handful of dill, finely chopped
• 1 tbsp fresh horseradish, peeled and grated
• 1 handful of flat-leaf parsley, leaves picked and finely chopped
• Juice of 1/2 lemon
• 1/2 head of fennel, very finely diced or shaved, and leaves reserved for garnish
• 3/4 Granny Smith apple, cored and finely diced
• Zest of 1/2 lemon
• Pinch of sea salt
• 1/2 tsp white wine vinegar