make.coffee

class Beans
  from  : [ 'Central America', 'South America', 'East Africa' ]
  brand : 'Gevalia'
  name  : 'Ebony'

class Coffee extends Beans
  sugar : no
  milk  : no

people = [ 'Andreas', 'Sofia' ]
serve = for person in people 
  cup = new Coffee
  cup.sugar = yes unless person is 'Sofia'
  cup.milk = yes if person is 'Sofia'
  cup