Wild Garlic and White Bean Curry

Name: Wild Garlic and White Bean Curry
Ingredients: 1 tsp vegetable oil; 2 red onions, peeled and finely sliced; 1 1/2 tsp coriander seeds; 1 tsp yellow mustard seeds; 1 tsp fenugreek seeds; seeds from 5 cardamom pods; 3 fresh red chiles (or more if you like heat), sliced (seeded if you prefer less heat); 12 fresh curry leaves; 6 kaffir lime leaves; small handful of cilantro roots, washed and minced; 4 cloves garlic, peeled and crushed; 2 tbsp jaggery or superfine sugar; juice of 2 limes; 3 tbsp fish sauce; 2 (12-ounce) cans good-quality peeled plum tomatoes; 2 cups shelled fresh coco beans, or 1 cup dried cannellini beans, cooked; generous 3/4 cup coconut milk; 10 ounces wild garlic leaves