In a big saucepan boil water and add red rooibos tea and steep covered for 10 minutes. After the tea has finnished steeping strain it into a big jug.
Uncover and leave to cool.
Meanwhile, remove strawberry stems and discard. Place the strawberries in a blender and make a smooth purée. If you prefer your purée to be without the tiny pits, strain it through a fine strainer.
When the tea has cooled down to almost room temperature add honey and mix well. Add strawberry purée and vanilla, mix well and pour into glasses filled with ice.