Lighter Cassoulet

Name: Lighter Cassoulet
Ingredients: 500g dried haricot beans; 7 garlic cloves; 5 thyme sprigs; 3 rosemary sprigs; 200g smoked gammon steak, rind and fat removed; 1 bay leaf; 1 tbsp rapeseed oil; 1 medium onion chopped; 1 large carrot (200g total weight), chopped into 1cm pieces; 2 tsp butter; 500g pork shoulder diced into 4-5cm pieces, any excess fat trimmed; 125ml white wine; 230g can plum tomatoes; 3 Toulouse sausages; 25g panko or coarse dried breadcrumbs; 1 garlic clove finely chopped; 1 tsp finely grated lemon zest; 2 tsp rapeseed oil