<ul>
<li>1 medium-sized bottle gourd (lauki), peeled and chopped</li>
<li>1 medium onion, finely chopped</li>
<li>2 medium tomatoes, finely chopped</li>
<li>1 green chili, slit</li>
<li>1 tsp cumin seeds</li>
<li>1 tsp mustard seeds</li>
<li>1/2 tsp turmeric powder</li>
<li>1 tsp coriander powder</li>
<li>1/2 tsp garam masala</li>
<li>1 tsp red chili powder (optional)</li>
<li>1 tbsp oil</li>
<li>Salt to taste</li>
<li>Fresh coriander leaves for garnish</li>
</ul>