Write chainable methods at class level

pizzahut.rb

#PizzaHut.pepperoni(6).
#         italian_sausage_ml(20).
#         ham(6).
#         bacon(6).
#         seasoned_pork_and_beef(10).
#         deliver_to(street: "Infinite loop", city: "Cupertino", name: "Tim Cook").
#         go!

module PizzaHutClassMethods
  def current_pizza(recipes_params = {})
    @__pizza ||= PizzaBuilder.new(recipes_params)
  end
  
  def pepperoni(qty)
    current_pizza.add(pepperony: qty)
    self
  end
  
  def ham(qty)
    current_pizza.add(ham: qty)
    self
  end
  
  def bacon(qty)
    current_pizza.add(bacon: qty)
    self
  end
  
  def seasoned_pork_and_beef(qty)
    current_pizza.add(seasoned_pork_and_beef: qty)
    self
  end
end

class PizzaHut
   extend PizzaHutClassMethods
end