Here's a simple recipe for making Tulasi (Holy Basil) Kashayam (decoction) at home, which can be very beneficial for respiratory health and immunity.

### Ingredients:
- About 20-25 fresh Tulasi leaves
- 2 cups of water

### Instructions:

1. **Prepare the Tulasi Leaves**:
- Ensure the Tulasi leaves are clean and free from any dirt or impurities.
- You can use both green and purple varieties of Tulasi for making the Kashayam.

2. **Boiling Process**:
- In a clean pot, add 2 cups of water.
- Bring the water to a boil over medium heat.

3. **Add Tulasi Leaves**:
- Once the water starts boiling, add the Tulasi leaves to the pot.

4. **Boil and Simmer**:
- Allow the Tulasi leaves to boil in the water for about 5-10 minutes to extract the beneficial compounds.

5. **Strain**:
- After boiling, turn off the heat and let the mixture cool down slightly.
- Strain the liquid to separate the Tulasi leaves from the Kashayam using a fine strainer or a clean cloth.

6. **Storage and Usage**:
- Pour the Kashayam into a clean container.
- You can consume this Tulasi Kashayam warm or at room temperature.
- It's best consumed freshly made, but you can store it in the refrigerator for a day or two.

### Additional Tips:
- **Variations**: You can add a small piece of ginger or a pinch of black pepper while boiling for added flavor and respiratory benefits.
- **Dosage**: Typically, 1/4 to 1/2 cup of Tulasi Kashayam can be consumed once or twice a day, as recommended by an Ayurvedic practitioner.
- **Caution**: Tulasi Kashayam is generally safe for most people. However, if you have any specific medical conditions or are pregnant, consult with a healthcare professional before consuming it regularly.

This homemade Tulasi Kashayam can be a soothing and effective remedy, especially during seasons when respiratory issues are prevalent.