3-MCPD, a chemical compound that is carcinogenic, and can occur in some resin-reinforced tea bag materials Builder's tea, refers to a basic method of preparing tea in a mug with tea bags Tea leaf grading Tea strainer, a small mesh utensil that can filter out stray tea leaves when whole-leaf tea is poured from a teapot Tetley, the British tea company that introduced tea bags in the United Kingdom in 1953