I recently purchased a Vango PowerEx 0.9L Hard Anodised Kettle.

http://www.outdoormegastore.co.uk/vango-powerex-kettle.html

It will boil 0.5 Litres of Water from a temperature of 4-6C to Boiling in around 2 minutes and 15 seconds, when used in conjunction with a Coleman F1 Power Stove (7KW output) even with a virtually empty gas cartridge. It is very lightweight (around 130 grams), fast and fuel efficient, saving around 30% fuel due to the heat exchanger base.

Tea, coffee, hot chocolate and soup such as Mug Shot noodles. It nice to have a choice.