Budget travelers will be relieved to know that not only are Berlin's parties wild, but its groceries are also cheap. The big players to keep in mind are Penny, Aldi, and Lidl: a tri-fecta of grocers offering unbelievably affordable produce and pantry staples. Though selection might be a bit sacrificed to keep the prices so low, you can easily walk away with a week's full of food for under twenty Euro.