Is climate change changing the taste of cheese?

Climate change and heatwaves are increasingly affecting the taste of cheese. The process of cheesemaking relies on the composition of milk, which includes proteins, fats, acids, volatile compounds, and microbes. As temperatures rise and heatwaves become more frequent, dairy scientists are investigating how these changes impact milk composition and subsequently the flavor of cheese.

Archaeological evidence suggests that humans have been processing milk for thousands of years, but the exact origin of cheese remains uncertain. Cheese production involves a series of steps, including coagulation of milk proteins, removal of water and whey, addition of salt, and maturation. The principal protein in cow's milk, casein, plays a crucial role in curd formation.

The environment within the cheese, including moisture, salinity, acidity, temperature, and fat and protein composition, significantly influences its final characteristics. Heat stress in cows, which produces high-quality milk, can lead to reduced milk production, lower protein content, and altered fat and metabolite levels. These changes may ultimately affect the taste and quality of the cheese.