1. Preparation:
   Gather cilantro seeds or cuttings, a clean glass or jar, and fresh water.
2. Soaking Seeds (Optional):
   Soak the seeds in water for 24 hours to speed up germination.
3. Planting Seeds or Cuttings:
   Fill the glass with water, leaving room at the top.
   Completely submerge the seeds or cuttings in the water.
4. Location and Sunlight:
   Place the glass in indirect light to prevent algae growth.
5. Water Maintenance:
   Regularly refill the water to keep the seeds or cuttings submerged.
   Change the water every few days to avoid stagnation.
6. Root Development:
   Monitor root development of seeds or cuttings.
7. Harvest:
   Once the plants have healthy roots and a suitable size, harvest the leaves with culinary scissors.
   Leave the roots in the water so they continue growing.
8. Propagation:
   Propagate new plants from cuttings or collect seeds for future plantings.

By following these steps, you will be able to grow cilantro at home effectively using water.