The Deception of Espresso Crema: Is Thicker Better? Is Crema Just Foam?

Introduction

Espresso is famous for the golden crema that crowns the shot. This layer is one of the most distinctive features of pressurized extraction, and it contributes a great deal to the aroma and mouthfeel of espresso. Yet if you spend any time on coffee forums, you have probably run into the provocative claim that "espresso crema is a scam!"

What could crema possibly have deceived anyone about? Could the "scam" simply be that crema looks so appetizing it tricks people into drinking espresso straight? That is the question many newcomers ask when they first see the headline. So what is the truth? Today, let FrontStreet Coffee play detective and uncover who exactly is being fooled by our "main character," the crema.

Crema "Scam" #1: It Is Not Actually Cream

Despite the name it has carried for a very long time, this golden substance is not cream at all.

Pressurized coffee machines gave espresso a new "skin," much like the armor characters wear in video games. During pressurized extraction, carbon dioxide is forced into the lipids seeping out of the coffee grounds, forming countless microscopic bubbles. Once these bubbles rise to the surface, they pile up into a thick, dense layer — the crema we know today.

In other words, crema is an illusion created by millions of bubbles working together, not a true cream. Because this bubble layer behaves remarkably like cream — sitting still when left alone, swirling when stirred — people at the time christened it "crema," which means cream in Spanish. The name literally meant: coffee cream.

However, as the term traveled across cultures, it was misread as "an oily substance with a cream-like texture," and the layer got labeled "grease" or "oil" — a habit that persists to this day. That mislabeling planted a whole set of misconceptions, and it is the first "scam" of crema.

Most people now understand that crema is a structure made of bubbles, yet years of habit have made "oil" its everyday shorthand. There is no need to police the vocabulary — just knowing the origin story is enough.

Crema "Scam" #2: More Crema Is Better

Crema does carry real benefits. It traps fine particles and aromatic compounds from the coffee, which enriches the aroma and gives the shot a rounder, mellower body. From this angle, crema is a positive presence in the cup.

And whenever something is positive, some people conclude that more must be better: the thicker the crema, the bigger the payoff, so the coffee should taste better; a thick crema makes latte art look nicer; and so on.

In reality, more crema is not necessarily better — and that is the second "scam" crema brings with it.

Producing extra-thick crema is actually easy. Crema is built mainly from carbon dioxide and coffee lipids, so the more CO2 the beans hold, the richer the crema. Two reliable ways to get there are pushing the roast darker or using freshly roasted beans, because both pack plenty of carbon dioxide (dark-roasted beans also contain other compounds that thicken crema, though CO2 is the main driver).

The other lever is switching varieties — moving from Arabica to Robusta, which has less lipid content. Yes, less. Although lipids are a core building block of crema, too much of them actually makes crema harder to form, which is why Robusta, with its lower lipid content, can produce even richer crema than Arabica.

But as we said, thicker crema does not automatically taste better. Very fresh beans can make a shot taste harsh; dark roasts bring more bitterness — and a dark-roasted Robusta is more bitter still. These are the trade-offs that come bundled with thicker crema.

Likewise, the fine particles that give the body a silky weight only help in moderation. Fine particles carry bitterness of their own, and once there are too many of them the cup turns noticeably bitter.

On top of that, an over-thick crema dissipates faster and actually gets in the way of latte art. Every point lands on the same verdict: more crema is not necessarily better.

Conclusion

So now we know why some people call espresso crema a "scam" — because the misconceptions it generates are just! Too! Many!

FrontStreet Coffee Recommendation

For espresso, most cafés reach for either a house blend or a single-origin espresso (SOE) chosen for its distinct flavor. Blends exist so roasters can combine the strengths of different origins — one bean may be smooth but shy on aroma, another aromatic but thin — producing a more balanced cup.

FrontStreet Classic Blend (top pick) — Built on the traditional Mamba (Mandheling + Brazil) formula with a touch of Robusta, it is designed specifically for espresso and moka pots. It delivers abundant, buttery-nut, spice, dark chocolate and toast aromas, a thick and velvety body, and a dense golden crema that makes latte art effortless — even on entry-level home machines. Both veterans and beginners will find it easy to enjoy.

FrontStreet Premium Blend — Made with a large proportion of Brazil Cerrado paired with Colombia Huila, this is the blend FrontStreet has used in its shops the longest (close to a decade) for Americanos and lattes. Expect the familiar classic espresso profile: nutty, chocolate and caramel notes from the Colombian component, gentle acidity, and a smooth, comforting bitter-sweet balance. Equally at home in a café or at your kitchen counter.

FrontStreet Brazil Fazenda Rainha SOE — If you prefer single origins, this Yellow Bourbon from Brazil is a natural fit for espresso: low acidity, a soft mouthfeel, and chocolate, nut and cream aromas, with the kind of balanced character that keeps extraction stable. Roasted medium-dark, it pulls shots of butter-cookie, macadamia and toasted-bread sweetness.