How do you use a diffuser in a teapot?

To use a diffuser in a teapot, first fill the diffuser with your desired loose tea leaves, ensuring not to overfill it for proper steeping. Next, place the diffuser into the teapot and pour hot water over it, allowing the tea to steep for the recommended time based on the type of tea. Once steeped, remove the diffuser to avoid over-extraction, and enjoy your brewed tea. Clean the diffuser after use to keep it ready for your next infusion.