Puroast Low Acid House Blend Decaf Coffee, Whole Bean 2.5LB is ideal for those with sensitive stomachs or digestive problems who want a tasty cup of coffee without experiencing discomfort. Naturally less acidic varieties exist, while many brands employ various methods to further decrease acidity such as Puroast’s Mountain Water Process to extract caffeine safely without harsh chemicals.

A cup of coffee’s level of acidity depends on a number of variables, including its type of bean, how it was roasted and decaffeinated and its decaffeination method. Common acids found in coffee beans include chlorogenic acids and quinic acids which form during roasting; decaffeination processes also play a key role, with Swiss water methods generally having lower acidity than solvent-based methods.

A typical cup of caffeinated coffee typically has an approximate pH value of five, with decaf typically having an acidity level around four. However, acidity levels can be affected by how it’s prepared and stored – for instance when left sitting too long before being consumed again, quinic acid concentrations increase and more quinic acid is released into the coffee than usual – therefore it is recommended to drink it fresh to preserve optimal taste levels.