Tasting

Tactile Sensations

Tactile sensations in coffee refer to the physical mouthfeel and texture experienced while drinking, such as weight, viscosity, and astringency. These sensations are distinct from flavor and are primarily influenced by dissolved solids, oils, and colloidal particles.

When we talk about tactile sensations in coffee, we are moving beyond the aromatic and gustatory experience to focus on how the liquid physically interacts with the palate. Often referred to as 'mouthfeel,' these sensations are the result of the coffee's body, viscosity, and the presence of various compounds like tannins and oils. A professional taster evaluates these to understand the structural complexity of the brew.

Common tactile descriptors include 'syrupy,' 'creamy,' 'tea-like,' or 'thin.' These terms describe the weight of the coffee as it moves across the tongue. A high-body coffee, often associated with natural processing or darker roasts, feels heavy and coating, similar to whole milk or cream. Conversely, a low-body coffee, often found in light-roast washed coffees, feels light and delicate, similar to black tea or water.

Another critical tactile sensation is astringency. Unlike bitterness, which is a taste, astringency is a physical sensation of dryness or puckering in the mouth, often caused by high concentrations of tannins or chlorogenic acids. While some level of astringency can provide a pleasant 'snap' or structure to a coffee, excessive astringency is considered a negative quality that can make the coffee feel harsh or drying.

In practice, tactile sensations are a key component of the 'Body' score on a cupping form. They are influenced by everything from the coffee variety and altitude to the brewing method and water chemistry. For example, a paper filter will remove many of the oils and fine particles that contribute to a heavy mouthfeel, resulting in a cleaner, lighter tactile experience compared to a French press. Recognizing these sensations allows you to better articulate what you enjoy in a cup, helping you choose brewing methods and beans that align with your preferred texture.

Sources
  • · https://www.coffeester.com/knowledge/sensory
  • · https://beannbeancoffee.com/blogs/beansider/the-ultimate-coffee-glossary
  • · https://en.wikipedia.org/wiki/Coffee_cupping