Local drinks to give a go
Kiba:
This stands for Kirsch-Banane and is exactly that: cherry and banana juice. It's popular with young women and is surprisingly tasty. Plus the colours are pretty of course.
Apfelschorle:
Apple juice diluted with sparkling water, a nice refreshing drink for a summers day and a healthy alternative to soft drink. Even if you're not an apple juice fan (like me) you'll probably find it a great thirst quencher.
Caipirhinia:
Ahh, there's little that screams Berlin more than a Caipirhinia. The Germans have jumped on this cocktail made of limes, raw sugar and Brazilian cachaca (a white rum) with the enthusiasm of a dying man in a desert. Don't leave without trying one.
Hefeweizen:
A classic in the beer world. This literally translates as "yeast wheat" and is a cloudy, yeasty beer with, to me, a slight apricot taste. It's always served in long glasses with a slice of lemon. Other varients are available: dunkell (dark) is obvious, while kristall (crystal) has had the yeast removed and is a clear, lighter beer.
Berliner Weisse:
This is beer with flavouring, and is served in a a broad glass. It comes either with Himbeer (raspberry) or Waldmeister (woodruff). You're unlikely to ever taste woodruff outside of this country, so it's worth a try just for that experience. I'm not promising you'll like it though.