Espresso is a method of brewing coffee that has fascinated coffee enthusiasts for decades. One of the most intriguing aspects of espresso is the crema, the foam that forms on the surface of a freshly brewed shot. The crema contributes to the sensory experience of espresso, including its texture and aroma. Among its many visual characteristics, tiger stripes are particularly captivating.
Crema forms as gases dissolved in the coffee under pressure come out of solution during brewing, creating bubbles alongside coffee oils and other compounds. Tiger stripes are darker streaks or mottling visible against the lighter crema. They add visual interest, but their appearance alone does not tell you how a shot will taste.
Tiger stripes can appear on a well-extracted shot, but they are not proof of quality. Coffee freshness, roast level, the blend itself, and brewing technique can all influence the appearance of crema. An even distribution of coffee grounds and a consistent tamp help water flow through the coffee more evenly, reducing channels that can lead to uneven extraction.
Crema colour can offer a visual clue, but a light crema does not automatically mean under-extraction, and a dark crema does not automatically mean over-extraction. There is no single crema colour that guarantees a balanced shot. To explore how your brewing technique affects crema, try pulling a shot with our 2% Jazz Espresso blend.
Use tiger stripes as one visual clue, then taste your shot. Adjust your grind and brew ratio to find the balance you enjoy, rather than chasing a particular pattern or colour.
In conclusion, tiger stripes are a fascinating visual detail in the art of espresso making, but taste is the better final test. The next time you enjoy a cup of espresso, take a moment to appreciate the beauty of the crema and the work that went into creating a shot you enjoy.
Ready for your next shot? View the 2% Jazz Espresso blend.