Lentil and vegie dhal

Name: Lentil and vegie dhal
Prep time: 15 min
Cook time: 45 min
Total time: 1 h
Cuisine: Indian
Ingredients: 18.20 gm olive oil or macadamia oil; 1 red onion, finely chopped; 2 garlic cloves, crushed; 2 tsp fresh ginger, grated; 1 tsp ground turmeric; 1/2 tsp chilli powder; 210g (1 cup) split yellow lentils or red lentils, rinsed, drained; 3 vine-ripened tomatoes, coarsely chopped; 1 potato, peeled, coarsely chopped; 2 tsp brown mustard seeds; 2 sprigs fresh curry leaves; 12 (about 30g) pappadums, microwaved, to serve; Lime cheeks, to serve