Introduction:Want to enjoy a richly layered iced coffee on a hot summer day? This article features the Chaka Natural from Gesha Village as the star bean, testing four brewing methods—hot pour over, ice-flash brew, Japanese-style iced pour over, and cold brew. We detail each method’s parameters, steps, and unique flavor profiles. Whether you’re a coffee beginner or an advanced enthusiast, you’ll find an iced coffee solution that suits your taste.

On a sweltering summer day, a refreshing iced coffee can instantly invigorate the senses. For this test, we used the Chaka Natural from Gesha Village, sourced from the Banko Mic region. Through four different brewing methods, we explored how its flavors evolve in low-temperature conditions. This blend—combining Gori Gesha, Gesha 1931, and Illubabor—delivers a balanced profile of citrus, oolong tea, and creamy notes after a light roast.

Chaka is part of Gesha Village’s mid-tier blend series, positioned below the Green Label in their quality grading. The blend combines genetically diverse Gori Gesha, the 1931 variety (which resembles Panamanian Gesha in form), and a disease-resistant strain selected from Ethiopia’s Illubabor forest in 1974. This combination allows it to showcase diverse characteristics under different brewing techniques.

For roasting, we used the Yangjia 800N machine with a light roast profile. The charge temperature was 190°C, first crack began at 8 minutes and 42 seconds, and the final discharge temperature was 196.6°C. The Agtron bean color value was 66.5, with a Delta value of 14.9. This roast level preserves the bean’s bright acidity and fruity-floral notes, laying a solid foundation for the subsequent iced brewing experiments.

Hot Pour Over MethodUsing a V60 dripper, a 1:15 coffee-to-water ratio, 90°C water temperature, 15g coffee dose with medium-fine grind (VARIO-5O, 57% extraction). Begin with a 28g bloom for 30 seconds, then pour in stages to 225g total. Total brew time is about 1 minute and 55 seconds. This method highlights bright, refreshing acidity with citrus, oolong tea, and plum notes, while the nutty and brown sugar finish balances the overall profile—ideal for those who enjoy a layered, nuanced cup.

Ice-Flash Brew MethodPlace 50g of ice at the bottom of the dripper, use 25g coffee with a coarser grind (75% extraction), bloom with 45g water, then pour in stages to 155g.The key lies in allowing hot water to directly contact the ice for rapid cooling, with a total brew time of 2 minutes and 51 seconds. This method enhances floral and berry notes, blending honey and green tea aromas with a vibrant juiciness—perfect for coffee lovers seeking a fresh, fruity experience.

Japanese-Style Iced Pour OverUses a 1:15 ratio, 20g coffee dose with an even finer grind (80% extraction). Start by adding 100g of ice to the server, then bloom with 27g water and pour to 202g total. The rapid heat exchange between hot coffee and iceeffectively locks in sweet flavor compounds, resulting in dominant notes of chocolate, hazelnut, and caramel, paired with tropical fruit and toffee aromas. The cup is rich, sweet, and full-bodied.

Cold Brew MethodIs the simplest: 20g coffee to 200g room-temperature water (1:10 ratio), using a coarser grind (VARIO-4E, 73% extraction), steeped in the fridge for 8 hours before filtering. Low-temperature extraction minimizes the release of unwanted compounds, yielding natural fermented notes of almond, apricot, and berries. The finish brings a refreshing balance of floral and cocoa tones—especially suitable for those who prefer less acidity.

Testing revealed that the V60 dripper’s rib design significantly impacts different methods: during hot pour over, the extraction difference between the center and edges creates rich layering; the Japanese-style iced pour over maintains sweetness stability through ice cooling. While cold brew is straightforward, pay attention to water purity and container hygiene—opt for glass or food-grade plastic to avoid off-flavors.

In summary, Chaka beans shine uniquely across all four methods: hot pour over showcases vibrant acidity and complexity, ice-flash brew intensifies refreshing fruit notes, Japanese-style iced pour over locks in sweet richness, and cold brew delivers pure, natural fermented flavors. Depending on the season, climate, and personal taste preferences, you can flexibly choose the best brewing method to enjoy the endless charm of iced coffee.

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