Here’s how to prepare Puto Bumbong from scratch:

1. Prepare the Rice Flour Mixture: In a mixing bowl, combine glutinous rice flour and salt. Gradually add water and mix until a smooth batter forms.
2. Color the Mixture: If using purple yam, mix it into the batter until evenly incorporated. Alternatively, add food coloring for a vibrant hue.
3. Prepare the Steamer: Fill a steamer with water and bring it to a boil.
4. Prepare Banana Leaves: Cut the banana leaves into rectangular pieces (about 10×6 inches). Soften them by passing them over heat briefly.
5. Wrap the Mixture: Place a suitable amount of the batter onto a banana leaf and fold it into a conical shape, sealing the ends securely.
6. Steam the Treats: Arrange the wrapped batter in the steamer and steam for about 20-30 minutes, or until fully cooked.
7. Check If Done: Remove one of the Puto Bumbong from the steamer and let it cool slightly. Check for doneness by inserting a toothpick; it should come out clean.
8. Prepare for Serving: Unwrap each piece carefully and place them on a serving platter.
9. Add Toppings: Generously top each Puto Bumbong with grated coconut, a drizzle of melted butter, and brown sugar, or whatever toppings you prefer.

These simple steps will lead you to deliciously rich Puto Bumbong that everyone will enjoy.