Irish butter refers to butter made in Ireland from the milk of cows that have been grass-fed, often without the use of growth hormones or antibiotics. This high-quality milk, rich in beta-carotene, results in a butter with a distinctive rich, creamy flavor and a natural golden color.
The grass-fed diet of the cows has a significant impact on the flavor and texture of the butter, making it prized in culinary applications. The temperate climate in Ireland allows cows to graze on lush grasses for much of the year, leading to these unique characteristics.