1.5 tsp for 250mL water @98C, steeped seven minutes, drunk bare.
I find rooibos needs a long steep.
This tastes like mint plus milk chocolate plus rooibos, with a bit of vanilla. And it’s a decent rooibos base, not woody or, oddly, minty on its own. Decent, but not great; if the rooibos were separated from the other flavours, you wouldn’t taste much.
Fun to drink.