Festive celeriac koshari

Name: Festive celeriac koshari
Ingredients: 120g dried puy lentils; 120g white long grain rice; 2 small celeriac, peeled and chopped into small cubes; 2 garlic bulb, split across the middle; 150ml rapeseed oil or extra virgin olive oil; 4 onions, finely sliced; 120g macaroni; 2 tbsp pine nuts; 1 tsp ground cinnamon; 1 tsp cumin seeds; 1 tsp coriander seeds; 400ml vegetable stock; 2 tbsp dried cranberries; 1 lemon, zested and juiced; 2 tbsp rose harissa; 120g Greek yogurt; handful coriander leaves