Saturday, 04:00 
Food Unwrapped
Stout, Watercress, Mustard
Jimmy wants to know what gives stout its smooth texture. In Dublin he learns that the key ingredient is nitrogen. But how does a gas make something creamy? Kates on the trail of the ultimate superfood. Everyone wants to make healthy choices but when it comes to fruit and vegetables do we really know what the pick of the bunch is? One of these nutritional stars is watercress.