Wonderchef Piccolo Glass Tea Infuser with Plunger, 750ml, Black Ultra clear heat resistant borosilicate glass. Micromesh stainless steel infuser for nicely sieved tea. A sophisticated gift exuding class and taste. Method: Place black or green tea leaves inside the steel mesh. Pour boiling water but slightly cooled to 90-95 c. Allow the tea to steep to the desired level. Once done, push the plunger down to stop further extraction. Now enjoy the tea for as long as you wish.