How do I keep my homemade lemonade from getting bitter?
I squeezed two fresh lemons into a pitcher and then filled it with water and added some sugar (so I'm not pinching my face with the tartness!), and it was fine until this morning when I tried it (I made it two days ago) but today's glass is really bitter. Is there something I did wrong? I cut the lemons after and put them in to keep some flavour.