Overview: Matt Tebbutt travels to Sweden to learn how a food company uses liquid smoke to flavour sausages, a method that is cheaper and quicker and enables flavours to be tailored more effectively. The Food Standards Agency requires that ice-cream needs to contain milk protein and any kind of fat - vegetable being the one most commonly used. Martin Dickie and James Watt head to Brighton beach with an old-fashioned bicycle adorned with banners saying `Ice Vegetable Oil'. What will the public make of this product?