
I'm a huge fan of lemongrass so I find this very refreshing; especially when bored with normal barely water.
This drink is very easy to prepare - boil for about 1.5 hours washed barley in some water together with some winter melon (for natural sweetness) and a few bruised stalk of lemongrass.
I've been having a lot of fun experimenting with thermal pots especially cooking soups. They use their own internal heat to 'cook' the food stored in the pot. It also keeps the liquid food warm for at least 8 hours. I find this way of cooking very energy efficient. But having said that, for soups I usually simmer it for at least a good 40 min before putting into the thermal pot for a richer and more flavourful taste.
Recently found them very useful to cook rice too *especially useful if you don't own a rice cooker*. No more lid-on, lid-off. For those of you who cook rice over the stove I'm sure you know what I am talking about. ;)
Wash rice and add in required water. Bring water to boil for about 3-5 mins. Turn fire off, cover and put stainless steel pot into thermal casing. Leave for about 30 mins and viola, you have warm cooked rice. I find this very useful as I can precook rice ahead of time and still have warm rice when you return much later.
For other ideas, check out bentopet's recipes.