How to Brew Anaerobic Coffee: A Step-by-Step Recipe for Indonesia Frinsa Rujak Bebeg

Anaerobic coffee is one of the most exciting developments in specialty coffee, and Friedhats' Indonesia Frinsa Rujak Bebeg Anaerobic is a stellar example. This coffee undergoes a unique anaerobic fermentation that produces intense fruity and spicy flavors reminiscent of the traditional Indonesian fruit salad, rujak. Brewing it correctly is essential to capture its full potential. In this guide, we'll walk you through a precise pour over recipe designed to highlight the best of this coffee.

Whether you're new to anaerobic processed coffees or a seasoned brewer, this recipe will help you achieve a balanced, flavorful cup. We'll cover grind size, water temperature, pouring technique, and timing. Grab your kettle and let's get brewing!

Understanding Anaerobic Coffee and the Frinsa Rujak Bebeg

Anaerobic coffee is processed in sealed, oxygen-free tanks, which allows fermentation to develop unique flavor compounds. The Indonesia Frinsa Rujak Bebeg takes this to the next level with a specific anaerobic method that yields notes of ripe pineapple, jackfruit, tamarind, and a hint of spice. This coffee is bold and complex, so it requires a brewing approach that can handle its intensity without becoming muddled.

Because of its dense structure and high concentration of fermentable sugars, anaerobic coffee often needs a slightly coarser grind and a longer extraction time compared to washed coffees. The goal is to extract the sweet and fruity notes while avoiding the harsh, sour, or overly fermented flavors that can occur with over-extraction.

• Use water just off the boil (around 96°C) to prevent scorching delicate flavors.
• A medium-coarse grind (similar to sea salt) helps control extraction rate.

The Perfect Pour Over Recipe for Indonesia Frinsa Rujak Bebeg

We recommend using a V60 or similar cone-shaped dripper for this recipe. Start with 15 grams of coffee to 250 grams of water (a 1:16.7 ratio). Rinse your filter with hot water to remove paper taste and preheat your brewer. Add the ground coffee and level the bed.

Begin your bloom with 45 grams of water, gently swirling the brewer to ensure all grounds are saturated. Wait 30 seconds. Then, pour in a slow, circular motion, adding water in two stages: first up to 150 grams, then after the water level drops slightly, continue to 250 grams. Aim for a total brew time of 2:30 to 3:00 minutes. If the brew runs faster, grind finer next time; if slower, grind coarser.

• Bloom: 45g water, 30 seconds
• Main pour: two stages, slow circular motion
• Total time: 2:30–3:00 minutes

Tips for Brewing Fermented and Anaerobic Coffees

Anaerobic coffees like the Frinsa Rujak Bebeg can be more sensitive to water quality. Use filtered water with moderate hardness (around 100–150 ppm) to enhance flavor clarity. Also, avoid over-agitation during the pour; a gentle swirl after the bloom is enough. Too much agitation can extract harsh tannins.

If you enjoy this style, you might also explore other unique offerings from Friedhats, such as the Colombia Diego Horta Infused Gesha Omni, which uses a different fermentation technique. Each coffee has its own character, but the same principles apply: control your variables and taste as you go.

• Use filtered water with moderate mineral content.
• Avoid aggressive pouring; gentle circular motions work best.
• Experiment with temperature: slightly cooler (93°C) can tame acidity if needed.

Brewing anaerobic coffee doesn't have to be intimidating. With the right recipe and a little practice, you can unlock the vibrant, complex flavors of the Indonesia Frinsa Rujak Bebeg. Ready to try it yourself? Grab a bag from Friedhats and start brewing your best cup today.