Mouthfeel
Mouthfeel is the broader sensory category that encompasses all of the tactile, physical sensations coffee produces in the mouth — including body (weight and thickness) but extending to qualities like smoothness, roughness, astringency, creaminess, juiciness, grittiness, oiliness, and dryness. While body answers "how heavy does this feel?", mouthfeel answers "what does the texture feel like overall?" It is a critical component of the total coffee experience that is often underappreciated by casual drinkers.
Mouthfeel is influenced by several factors. Dissolved compounds and suspended particles determine body, while the specific types of compounds present determine textural nuances. Polyphenols and chlorogenic acids can produce astringency — a dry, puckering sensation similar to tannins in wine. Lipids contribute creamy, coating sensations. Fine suspended particles from metal filtration add a velvety or slightly chalky texture. Over-extracted coffee often produces a harsh, drying mouthfeel from excessive tannin and quinic acid extraction.
Brewing method is the most controllable variable for mouthfeel. Paper filters produce clean, smooth mouthfeel by removing oils and fines. French press produces a rich, slightly gritty mouthfeel from unfiltered oils and sediment. Espresso creates a thick, syrupy, sometimes velvety mouthfeel from its high concentration of dissolved and emulsified compounds. Even water chemistry affects mouthfeel — high-mineral water can produce a chalky or heavy texture, while very soft water can make coffee taste thin and hollow.
Descriptors used for mouthfeel in professional cupping include: silky, velvety, buttery, creamy, juicy, syrupy, chalky, watery, coating, clean, astringent, dry, gritty, and oily. Developing sensitivity to mouthfeel requires deliberately paying attention to the physical sensation of coffee in your mouth — separate from flavor — and comparing the same coffee brewed through different methods side by side.