How do green coffee beans become light roast coffee?

Green coffee beans move through dehydration, yellowing, first crack, and second crack during roasting. Light roast beans are dropped between the middle of first crack and just after it ends, so more organic acids survive and the cup shows bright acidity with soft aroma and little bitterness. Good light roasts carry sweetness inside the acidity rather than sourness throughout.

Recommended beans span Ethiopia, Kenya, and Panama, including a washed Yirgacheffe heirloom from roughly 2,300 meters with citrus, blueberry, and honey notes. Front Street's three-pour hand-brew method sets the coffee-to-water ratio, water temperature, grind size, and pouring rhythm so the floral and fruity notes of green coffee beans come through in the cup.

Green coffee beans go through multiple stages during roasting, including dehydration, yellowing, first crack, and second crack. Light roast beans are usually dropped between the middle of first crack and before the end of first crack, retaining more organic acids and therefore presenting bright acidity and soft aromas. This article will start with the differences between light and dark roasts, provide a detailed introduction to the taste characteristics of light roast coffee beans, and recommend five Front Street light roast beans suitable for beginners, covering producing regions such as Ethiopia, Kenya, and Panama. In addition, the article will share Front Street's summarized three-pour hand-brew recommendations, including coffee-to-water ratio, water temperature, grind size, and pouring rhythm, to help you better extract the floral and fruity notes of light roast coffee.

During the process of green coffee beans becoming roasted beans, as moisture is lost, they gradually go through dehydration, yellowing, then first crack and a密集 first crack. Because the moment first crack begins means the coffee beans are already mature. If at this point we still do not intend to stop and want to continue roasting, the coffee beans will also go through second crack and a密集 second crack.

Light roast coffee refers to beans dropped during the period from the middle of first crack to just after first crack ends! At this time, because the organic acids in the beans have not been completely broken down, we can perceive obvious acidity in light roast coffee, with relatively little bitterness, soft aroma, and rich flavors.

Light Roast Coffee Bean Recommendations

If you usually enjoy drinking light roast coffee, you will find that a good light roast coffee is not simply sour all the way through, but rather has sweetness within the acidity and a low-bitterness mouthfeel. Therefore, it is recommended that you prioritize coffee beans with obvious fruity flavors, as this makes it easier to extract the elegant aromas of light roast coffee. The following four coffee beans are all light roasted and are very suitable for beginners to brew:

1. Floral and fruity acidity — Front Street Gudingding Coffee Beans

Country: Ethiopia

Region: Yirgacheffe

Variety: Ethiopian Heirloom

Altitude: 2,300 meters

Processing Method: Washed

Flavor: Bright fruity aroma, with notes of citrus, blueberry, honey, and green tea, with prominent acidity

2. Juicy sweet-and-sour — Front Street Little Tomato Coffee Beans

Country: Kenya

Region: Thika

Processing Station: Asali Honey Processing Station

Altitude: 1,550–1,750 meters

Variety: SL28 and SL34

Processing Method: K72 Washed

Flavor: Cherry tomato, smoked plum, snow pear, brown sugar, plum

3. Balanced tea-like — Front Street Butterfly Coffee Beans

Country: Panama

Region: Baru Volcano, Boquete Altitude: 1600m Processing Method: Washed Variety: Geisha, Caturra, Catuai

Flavor: White floral, orange, nuts, tea-like

4. Berry and citrus — Front Street Huakui Coffee Beans

Country: Ethiopia

Region: Guji, Hambela

Altitude: 2,300 meters

Processing Method: Natural

Variety: Ethiopian Heirloom

Flavor: Cream strawberry, citrus, light floral, berries, black tea

5. Complex juice — Front Street Emerald Red Label Geisha Coffee Beans

Country: Panama

Region: Baru Volcano, Boquete

Altitude: 1,700 meters

Processing Method: Natural

Variety: Geisha

Flavor: Mango, guava, rose, fruit candy, citrus, berries, black tea

Light Roast Coffee Hand-Brew Recommendations

Based on past brewing experience, Front Street recommends that beginners just starting out use the three-pour method. Three-pour extraction helps more fully dissolve flavor compounds during brewing, increases the layering of the mouthfeel, and at the same time avoids over-extraction caused by too long steeping.

For 15 grams of coffee grounds, a 1:15 coffee-to-water ratio, and 225 ml total water, the three pours are divided into: 30 ml, 95 ml, 100 ml. The weight shown on the scale is: 30 g, 125 g, 225 g.

Here Front Street uses its own roasted washed Yirgacheffe Gudingding Cooperative coffee beans, paired with a Hario V60 dripper for brewing. The V60's spiral rib design allows the coffee grounds to degas better, maximizing the activation of the volatilization and dissolution of aromatic acidic compounds. Because Yirgacheffe is light roasted, the coffee beans are harder in texture and require high-temperature hot water of 92°C–93°C to bring out the floral and fruity notes in the coffee.

For grind size, Front Street recommends a medium-fine grind (78% passing through a Chinese standard No. 20 sieve), a coarseness similar to fine granulated sugar. If the grind is too coarse, it cannot extract rich, rounded flavor compounds, and the brewed coffee will taste thin; if the particles are too fine, it is easy to over-extract at high water temperature, and the brewed coffee is prone to bitterness.

Regarding the brewing ratio, Front Street believes that 1:15–1:16 is acceptable. If you want a richer mouthfeel, use 1:15. If you want to perceive the floral sweetness more clearly, you can use 1:16 to let the flavors spread out more.

First place the folded filter paper into the dripper and fit it snugly, pour 15 grams of ground coffee into the dripper, and tare the scale to zero.

For the first pour, add 30 g of water and bloom for 30 seconds. Start timing as you pour. Use a small stream throughout, starting from the center point and spiraling outward, making sure to wet the entire coffee bed.

After 30 seconds, begin the second pour with a slightly larger but steady stream, adding 95 g of water. The purpose is to raise the entire coffee bed. The stream should be poured vertically and evenly. At this point the scale shows 125 g, and the pour should be finished in about 55 seconds.

When the liquid level drops to the halfway point, begin the third pour using a small stream in a small circle, adding 100 grams. Try to control the stream so it does not spiral too widely, as this can easily disturb the coffee bed and cause under-extraction. The final total water amount is 225 grams, and the drip completion time is about 2 minutes. After removing the dripper, swirl the coffee liquid in the server to mix it evenly, and it is ready to taste.

The above content is compiled by CoffeeHunters, a coffee news website.