It also takes 2 litres of water to make one litre bottle of bottled water
THAT'S waste. Making something that' not much different or worse than tap water just becasue the companies tell you it's cooler that way.
Mineral water excluded, that thing is beneficial for your health.
Now a full english, you need to water the crop and water the animals and a lot of it falls from the sky, especially the water the plants kind.
I'd bet the same water to food ratio is for muesli, fruit salad, sandwich...
Then again, that ratio might be higher for a fruit salad, you have to water the tree for 5 years before it's first crop
