Borosilicate Glass Stove Top Whistling Tea Kettle - 12 Cup/48oz Capacity - BPA-Free - German Made Glass Kettle for Gas, Electric, and Glass Ranges

The water is so clean well it's glass and just tastes great, I will never go back to metal kettles on the stove top, The whistle is loud and clear the glass is easy to wipe down with a damp rag, I do go from scolding hot water pored into a mug and then filled up with freezing cold water from the tap here in the winter, and it's not a problem for this little glass beauty. We use the very small burner on the stove top, and it takes about 4 minutes to boil two large mugs of water. This way, you are using a tiny amount of energy to boil the water. On the side of the glass kettle there is a making for the minimum amount of water this will take, and it equates to two large mugs of water. We are all impressed with this work horse of a kettle and if this one breaks we are all unanimous in this house we will definitely be buying another straight away, cross fingers we haven't dropped it yet lol

this really good just right for us you can judge how much water you put in saves on gas if you want2-4 cups of tea just put a cup of water in or 4 cups keeps hot for a good 15mins so your not re heating PUT THE METAL RING IN SIDE also you can judge when it boils once agene saves on gas etc