Botanical Garden of the University of Potsdam: Sour makes you happy

Does sour really make you happy? This student lab focuses on acids and how to detect them. Students are introduced to laboratory work, wearing lab coats and safety goggles to test various objects for their pH content.
What kinds of acids are found in the plants of the botanical garden? A short tour leads to oranges, pineapples, and other fruits. As a special highlight, the miracle berry is tasted; this berry makes all sour things suddenly taste sweet.