Most people drink a lot of juice (especially apple juice and orange juice) and I personally think that most juices are by default way to sweet.
The easiest way to make a juice less sweet is to water it down so my first thought is why is there not a machine that does this for me. Something that fits easily in my fridge where I can poor my apple juice in and then add water and it mixes it together when you tap. This low tech solution is nice but still not great since you have to do a lot of stuff by hand. (refill etc. etc.)
So then I thought about creating a Senseo, Krups like machine where you just at water and juice version of the coffee capsules and voila you have your juice in a specific strength. I don’t know if it’s really efficient if you would “brew” your juice by the glass but you can always make the capsules strong enough to fill an entire bottle that you place in your fridge.
I am personally shocked that companies that sell fruit sirup haven’t tried this yet. It’s has the potential to become an entire new segment like the coffee capsules are now.
All I found where some in my perspective crappy sparkling water makers or the way to fancy juicers (100 bucks and up) that are not very practical to make a simple lemon juice.
The product would be perfect for people with kids who drink lot’s of apple / orange juice or people that don’t like to drink water without a little bit of taste.
Update, two weeks after I wrote this post Keurig announced a Soda machine together with Coca Cola. It’s not exactly the healthy option I would prefer my self and the caps are really expensive ( about a $ 1,50) but it’s a start and could and probably will lead to more affordable and more general versions. Read more here on techcrunch.