Is Oily Coffee Really Delicious? How to Grind Coffee Beans for More Rich Oils?

Is Oily Coffee Really Delicious? How to Grind Coffee Beans for Richer Crema?

Here is a fact worth internalizing: some cheap, low-grade beans still produce plenty of crema when fresh. And the reverse holds too—a light-roasted, top-quality coffee can pull a thin, pale-golden crema without the espresso tasting bad at all.

CREMA

Crema is espresso's most distinctive feature. Under pressure and heat, the carbon dioxide built up in the bean's cells is released and whips into a layer of fine foam on the surface of the shot—that foam is crema.

"Color ranging from hazelnut to dark brown, streaked with reddish-brown tigering, and an extremely fine texture"—that is the traditional Italian ideal of espresso crema.

What Crema Tells You

Whether the Beans Are Fresh

Watch how the crema behaves. With fresh beans, the entire cup is crema the instant extraction ends; only afterward do the liquid and the foam separate into two distinct layers.

The Degree of Extraction

When crema turns dark—dull, approaching black, or flecked with dark spots—the shot may be over-extracted.

When the crema is pale gold and the shot runs too fast, the espresso is likely drifting toward under-extraction.

Extraction Uniformity

If the crema's flow and color stay stable—bright hazelnut or reddish-brown, thick in texture—channeling was probably minimal, and the shot is in a good state.

How Crema Affects Flavor

Leave an espresso standing too long and it turns sour. Many compounds contribute to that sourness, hydroxy acids chief among them.

Lipids are one of coffee's countless chemical constituents. When lipids meet water, they hydrolyze into hydroxy acids.

Put simply: without its crema, espresso loses its aroma quickly, its balance collapses, and sourness takes over.

Recommended Coffee Beans with Rich Crema

FrontStreet Coffee, a roasting brand based at Dongshankou in Yuexiu District, Guangzhou, offers freshly roasted espresso blends with full brand and quality credentials and generous crema—well suited to specialty espresso drinks and latte art. The value is remarkable. Take their commercial-grade workhorse, FrontStreet Coffee's Commercial Blend: one pound (454 grams) costs only about 60 yuan. At 10 grams per single shot, one bag makes 45 shots—under 1.5 yuan each. Even pulling doubles (20 grams), a double espresso costs no more than 3 yuan. Against big-name blends selling for hundreds of yuan a bag, it is a genuinely conscientious recommendation.

FrontStreet Coffee Recommendation

Espresso beans come in two flavors of choice: blends, which most cafes prefer, and single-origin espresso (SOE) for those chasing a specific taste. Blends exist because a roaster can combine strengths—one bean smooth but shy on aroma, another aromatic but thin—into something better than either. If crema is what you are after, FrontStreet's recommendations:

• FrontStreet Classic Blend (first choice): Built specifically for espresso and moka pot work, and its standout strength is crema—so abundant that even a beginner on a basic home machine pulls dense, silky foam. A traditional Mamba recipe (Mandheling plus Brazil), mellow and warm, with a touch of robusta for that wild, thick body and explosive golden crema. Lattes, cappuccinos, Dirty—this is the bean they all need.
• FrontStreet Commercial Blend: The classic cafe workhorse—cheaper than FrontStreet Coffee's Premium Blend and optimized for taste-per-yuan rather than extreme crema, which is why shops have relied on it for years.
• FrontStreet Specialty Blend and Black Cocoa Blend: For fans of almond, walnut, and hazelnut aromatics. Both carry a large share of Brazil for smooth, creamy-peanut sweetness; the Specialty Blend adds Colombia's nut, chocolate, and caramel notes with balanced acidity, while FrontStreet Coffee's Black Cocoa Blend layers in Yunnan's ripe-plum acidity and a cream-chocolate aroma—equally good in specialty drinks as in a straight latte.

And remember: crema is a signal, not a verdict. It tells you about freshness and extraction—but whether a coffee is "delicious" is still decided by your palate, not by the foam.