Kerrygold, Organic Valley and Trickling Springs Creamery use milk from grass-fed cows to make butter. Kerrygold Irish butter, comes in a few varieties, including salted, unsalted and naturally softer.
Kerrygold uses special production methods on summer milk to create its naturally softer butter. None of the cows involved in the company's butter-making process are given growth hormones.
Organic Valley cows graze on organic pasture plants to get their required vitamins and minerals. According to the company, this results in milk that is high in butterfat.
Trickling Springs Creamery butter is available throughout the Mid-Atlantic region. The milk-producing cows live on 100 percent certified organic local farms and are free of both hormones and antibiotics.