Tea bags
Sugar and
If desired, lemon and/or mint
Ice
Let the tea bags sit in a pan of hot water until it reaches the strength you want - that's up to you. Add sugar to desired degree of sweetness - that's up to you. Adding lemon and/or mint? - that's up to you (though not one of the normal ingredients of sweet tea). Keep a pitcher of sweet tea in your refrigerator all the time. You hear?