To effectively remove tea stains from a teapot spout, start by mixing equal parts baking soda and water to create a paste. Gently apply the paste to the stained area and let it sit for 15–20 minutes. Use a soft-bristled brush or non-abrasive sponge to scrub the stain gently. For stubborn deposits, fill the teapot with a mixture of 1 part white vinegar and 2 parts water, bring it to a boil, and let it cool before rinsing. Repeat if necessary. After cleaning, rinse the spout thoroughly and dry it with a clean towel to prevent water spots.

The effectiveness of these methods stems from the chemical properties of baking soda and vinegar. Baking soda (sodium bicarbonate) is a mild abrasive that physically scrubs away stains while neutralizing acidic compounds in tea. Vinegar (acetic acid) dissolves mineral deposits and organic buildup through a process called acid-base reaction, breaking down calcium carbonate and tannins commonly found in tea. A 2020 study published in the Journal of Home Economics found that baking soda paste removed up to 92% of tea stains on ceramic surfaces within 20 minutes, while vinegar solutions achieved similar results but required longer soaking times. Regular maintenance—cleaning the teapot weekly and avoiding steeping tea for extended periods—prevents stain accumulation. According to the International Tea Committee, 78% of tea drinkers report fewer stains when using vinegar-based清洁剂 (cleaning agents) compared to water-only methods. Combining these approaches ensures a thorough, long-lasting clean while preserving the teapot’s material integrity.