- Mix the water, sugar, yeast and 50g of flour thoroughly, then cover and allow to ferment for an hour in a warm place. 
- When the yeast mixture is frothy and active, melt the butter and mix with the yeast mixture and the remaining flour for 5 minutes on a slow setting in a mixer with a dough hook. The dough will become elastic and firm. 
- Allow the dough to rise in a warm place and under cover for an hour (or until it doubles in size). 
- Place the loin in a preheated pan with a little oil and seal until golden brown.  
- Add the butter and allow to foam until nutty brown in colour, then add the herbs and garlic and cook gently until the meat reaches a core temperature of 45°C. Allow to rest for at least 10 minutes.  
- Cut the dough into 6 large or 12 smaller evenly sized pieces, then roll them out to a thickness of 5-6mm on a well-floured surface.  
- To cook the naans, dust off any excess flour and dry fry in a hot, heavy-bottomed pan. After 3-4 minutes, they will begin to puff up. Turn them over and cook for another 3-4 minutes. Once cooked, place on a cooling wire so they don’t sweat. 
- Add in the spinach, chickpeas and Puy lentils and reheat the sauce.  
- Season to taste, then pour the curry into a wide serving bowl, slice the loin and scatter over the curry, topping off with the yoghurt and chopped coriander