... is that it grows like wildfire and then turns to seed, unless I'm doing something wrong. So I pulled out the plants, picked off the remaining green leaves and cut them up finely - it yielded about a cupful. Then I placed them a bowl with 125g of butter and a finely chopped chili, beat it all up, rolled it up in foil and threw it into the fridge to harden. Ever tried baked, halved sweet potatoes with pucks of coriander butter sitting on top and melting over the sides? Delicious.