One of the most classic instruments used to brew loose leaf tea is a tea ball infuser, which has been around for over a hundred years. After years of evolving, this tiny yet extremely helpful device has become a saviour for all tea enthusiasts. Also known as the tea egg, this infuser is made of stainless steel, with a latch in the middle where the casing opens up into two halves. This tea infuser is a must-have accessory for every tea enthusiast out there.