In a large pot, combine the carrots, green beans, drumsticks (if using), raw banana, yam, and snake gourd (if using). Add 200 ml water, turmeric powder, slit green chilies, and salt. Bring to a boil over medium heat, then reduce heat to low, cover, and simmer for 10-12 minutes until the vegetables are tender but not mushy. Drain any excess water, reserving it.