The New Zealand source is crucial to establishing this beef liver product as the highest quality available. This area of the world has a unique soil microbiome that cattle thrive on. This type of beef goes beyond “grass-fed” because its diet consists of multiple plants besides grass alone. Many brands may claim grass-fed, but it is only for a small portion of their cattle’s overall life span. It is proven that GMO grain-fed cattle contain substantially fewer nutrients than their healthier organic grass-fed counterparts. PurelyLIVER’s 100% grass-fed is the healthiest beef liver option available.