Beer and Wine Exam Practice Test 2026 – Complete Study Resource

Nitrogen creates the creamy mouthfeel because it is far less soluble in beer than carbon dioxide, so it forms many tiny bubbles that rise slowly and stay dispersed. That result is a smooth, velvety texture with a dense head, which is characteristic of stouts like Guinness. In practice, these beers are served with a nitrogen-rich blend (often using a widget in cans) to deliver that signature creamy pour. Carbon dioxide would give a sharper, more biting carbonation, while oxygen and argon don’t contribute to the creamy texture in this context.