Ace the 2026 Beer & Wine Exam 2 – Cheers to Your Credentials!

Foam quality in beer comes from surface-active compounds that form a stable film at the bubble interface, and proteins from malt are major players in creating that stable, creamy head. As beer is carbonated and bubbles rise, these proteins unfold and organize at the air–water boundary, reducing bubble collapse and helping the head persist. This protein-based film can work with hop-derived compounds to boost head retention, giving a creamier, fluffier appearance rather than a quickly dissipating froth. So, yes—the protein content in beer significantly influences a creamy head. Other factors like carbonation level, temperature, and glass cleanliness also influence the result, but protein is a central contributor to that creamy head.