Indian spiced pork loin with foraged greens

1 (heaped) tsp ground cumin
½ tsp chilli flakes, or powder
½ tsp ground cardamom
¼ (heaped) tsp ground cloves
1 tsp cinnamon
1 tsp black pepper
2 dried bay leaves, finely crushed
1 tsp salt
3 tsp apple cider vinegar, or lemon juice
2 tbsp mustard oil, or olive oil
1½ tbsp honey
100 g greek yoghurt
6 x 200 g pork loin steaks* (2 cm or 1 inch thick)
2 tbsp olive oil, for cooking