In 1979 Steve Jobs visited Xerox PARC (Palo Alta Research Center) and was exposed to their GUI, graphical user interface, running on Xerox computer called Alto. The Yeast Nutrient is self explanatory and the Pectic Enzyme is to support your Cider be clear and not hazy. People nowadays are rapidly starting to get cell phones at a younger an earlier age. Some other Apple offerings include iPhone and Magic Mouse.