Complex sentence: Traditionally stock is made by simmering various ingredients in water, including some or all of the following, a new approach is to use a pressure cooker, this will result in a better stock in a much shorter time.
Split into simpler sentences: Traditionally stock is made by simmering various ingredients in water, including some or all of the following. A new approach is to use a pressure cooker; this will result in a better stock in a much shorter time.