Extraction Method of Donut Extraction

A donut extraction is a specific type of uneven espresso extraction where water is forced against the basket walls, breaking the sidewall seal and leaving the center of the coffee puck under-extracted. Historically, this phenomenon was identified visually during pre-infusion, appearing as a ring of coffee around the outer edge of the portafilter basket before the center began to flow. In traditional lever and E61 grouphead machines, inherent designs in the shower screen can push water toward the edges, causing the water to penetrate the perimeter of the coffee puck sooner than the center.

Modern methods to mitigate donut extractions focus on precision in puck preparation and equipment adjustments. Baristas utilize techniques like the Weiss Distribution Technique (WDT) with fine needles to ensure even coffee distribution and prevent channeling. Latest developments also emphasize the use of precision-sized tampers (such as 58.5mm for VST baskets) to ensure a complete seal against the basket walls. Additionally, advanced practitioners use elongated pre-infusion times and pressure pulsing to allow the coffee puck to saturate more uniformly, helping to overcome the mechanical tendencies of certain groupheads to favor the outer ring.

The most direct interpretation of the Donut note is found in photorealistic gourmand fragrances, designed to capture the cozy, sweet, and comforting aroma of a freshly baked treat. Classic examples include **Demeter Fragrance Library’s Jelly Doughnut**, which precisely blends the scent of grape jelly with warm fried dough and a sugary top layer. Similarly, Bath & Body Works popularized the note with their wildly successful **Raspberry Jam Donut**, a scent built on a trio of wild raspberry jam, powdered sugar, and a warm, fluffy doughnut accord, which highlights the sticky-sweet, jam-filled variety.

In the world of niche and indie perfumery, the Donut note is frequently used as a base for more complex or sophisticated gourmand concepts. For instance, **Fantôme's Kuidaore** takes the fried pastry dough and vanilla cream filling and adds a surprising, delicate dusting of matcha powder, offering a more artisanal and multi-layered bakery experience. Other brands often focus on specific flavors, such as Sucreabeille's **Why Use Many Word When Few Do Trick?** which zeroes in on a sweet cinnamon doughnut, or Kyse’s **Gateau de Carnavale** which is highly praised for capturing the pure, powdered-sugar essence of fried dough.

For high-end and mainstream designer fragrances, the Donut accord is often utilized not as a standalone note, but as an accent to suggest an elegant, subtle, and warm "glazed" quality. This effect is notable in **Kayali Vanilla Royale**, where a soft, creamy vanilla blend evokes the scent of a perfectly glazed donut, providing a cozy bakery vibe that remains wearable and sophisticated. Another unique usage is found in **Kerosene's Followed**, which uses the dense, sweet, and slightly savory doughnut shop aroma, combined with powerful coffee and caramel notes, to create a complex and addictive gourmand trail that has achieved cult status.

The Donut or Doughnut note is a versatile gourmand element that excels in cooler weather, making it particularly popular during the autumn and winter months when its warm, bakery-inspired aroma provides a sense of comfort and nostalgia. Its rich profile of fried dough, vanilla, and sugar glaze complements the cozy atmosphere of the holiday season and crisp fall days, though its playful and sweet character also allows it to be enjoyed year-round in casual or youthful fragrance compositions.