A perennial with very sweet foliage which grows to a height of 45cm. Needs to be protected from heavy frosts, although does die back in autumn. The leaves are 30 times sweeter than sugar and have no calories. It can be used in hot or cold drinks or as a sugar substitute in sweet dishes. A syrup can also be made by simmering 2 teaspoons of the dried leaves in a litre of water for 10 minutes. Refrigerate and use as needed.