Moroccan Slow Cooked Beef With Herbs

Name: Moroccan Slow Cooked Beef With Herbs
Ingredients: 1 kg gravy beef; 1 x red onion, finely chopped; 4 x garlic cloves, finely sliced; 2 tbsp olive oil; 2 tsp Ras el Hanout; 1/2 tsp harissa; 1/4 tsp freshly ground black pepper; 3 x ripe tomatoes, skinned and de-seeded, dice the flesh very finely; 2 x pieces of preserved lemon, pulp and membrane discarded, rind sliced; 2 tsp honey; 2 tbsp coriander leaves, roughly chopped; 2 tbsp parsley leaves, roughly chopped; extra coriander and parsley leaves roughly chopped; extra piece of preserved lemon