Flavor Profile of Costa Rica Baha and Tutorial on Brewing Costa Rica Raisin Process Coffee

Introduction to Bach Coffee from FrontStreet Coffee

Have you tried Bach from FrontStreet Coffee? It comes from Costa Rica's Musicians Series, named for Johann Sebastian Bach. Costa Rica is famous for honey processing — but have you encountered raisin honey processing? Here's what makes it special, and how to brew it.

Raisin Honey Processing Method

Raisin honey processing preserves 100% of the mucilage and uses zero water, which raises the difficulty considerably: it demands strict control of timing. On harvest day, the cherries are poured into large tanks — mature, full fruits sink while underdeveloped or overripe cherries float, and the floaters are removed. The sorted fruit dries on raised beds for at least three days; only then is the cherry skin removed, keeping the mucilage intact for further drying. At this stage, climate becomes the deciding factor.

During drying, the cherries must be turned constantly for even drying — but the frequency must be calibrated carefully: slow enough that the coffee ferments, not so slow that it over-ferments.

The raisin analogy isn't accidental. True raisins must be made from fully mature grapes, hold only 15–25% water, and contain as much as 60% fructose — which is why they're so sweet and keep so well. Over time their fructose may crystallize, but that doesn't affect their quality.

One detail worth borrowing from raisin making: sun-dried raisins tend to turn sour, while the finest are shade-dried. Turpan in Xinjiang, China — hot and dry — is famous for its seedless raisins, dried in brick drying rooms with perforated walls and wooden rod racks; hanging grapes inside these rooms and letting hot air circulate produces top-quality raisins quickly.

How Is Raisin Honey Processing Applied to Coffee?

The version FrontStreet Coffee works with is essentially "double fermentation honey processing": the cherries are first sun-dried to a raisin-like state, then skinned and fermented through the honey process. Because the mucilage is retained at 100% — more than any other honey process — fermentation aromatics come through far more intensely, with genuinely raisin-like character. It's an exceptionally sweet processing method: a white-wine mouthfeel, balanced acidity, and flavors reminiscent of "noble rot" dessert wines — honey, dried apricots, raisins, and peaches.

Brewing

Because this FrontStreet Coffee Bach is a flavor-driven bean, three drippers suit it particularly well: the V60, the cake dripper (Kalita wave), and the Ice Dripper. Parameters stay consistent across all three — a small, quick water flow to increase agitation and lift the aromatics, with three-stage pouring to push extraction.

Parameters: water temperature 91°C, grind at BG 5R (58% passing through the Chinese-standard 20-mesh sieve), coffee-to-water ratio 1:15.

FrontStreet Coffee · Costa Rica Canet Musicians Series Bach

Country: Costa Rica

Region: Tarrazú

Altitude: 1,950m

Processing Method: Raisin Honey Processing

Grade: SHB

Variety: Caturra

V60 Dripper

The V60 is engineered around the speed of drawdown: its interior ribs use an arc-shaped spiral structure that accelerates water flow, running from the bottom all the way to the rim to keep ventilation smooth from start to finish. The curved ribs lengthen the water's path, extending contact time between water and grounds. Because the flow rate is fast, uneven extraction is easy — but that very unevenness makes the flavor layers more abundant.

Technique: bloom with 30g of water for 30 seconds, pour to 120g and pause; when the water level nearly exposes the bed, pour on to 228g and stop. Remove the dripper just before the bed surfaces; total extraction time from the start of blooming is 1 minute 56 seconds.

Flavor: at high temperature the entry is balanced, with an obvious fermented wine note, the sweetness of rice wine and raisins, and a tea-like finish. As it cools slightly, berry acidity and a brown-rice-tea aftertaste appear, with a pronounced juiciness; fully cooled, it shows orange-like sweet-tart notes and a light sucrose sweetness in the aftertaste.

Cake Dripper

The cake dripper has a flat bottom with three drip holes, so the grounds sit steeped for most of the extraction, extracting more evenly. The body and the wavy filter paper don't fit tightly, which keeps temperature consistent and disperses the water flow. Coffee brewed this way has both mellow body and genuine layers — somewhere between the V60 and the trapezoid dripper.

Technique: bloom with 37g of water for 30 seconds (a flat-bottomed dripper takes more water to saturate), pour to 120g and pause, then continue to 228g. Remove the dripper just before the bed surfaces. Total extraction time: 2 minutes 3 seconds.

Flavor: clear fermented wine aroma; the entry carries citrus acidity and juicy character, with nuts and almonds in the middle, brown-rice-tea and rice-wine aftertaste, obvious sucrose sweetness, and higher body.

Ice Dripper (Blossom Dripper)

The Ice Dripper's ribs run vertically in a stepped pattern. At the bottom, the filter paper is suspended above the cup floor; at the very top, the cup and paper seal completely. That seal has a benefit: even if a sudden surge of water or overheated liquid floods the drainage channels, there's nowhere for air to escape, so the water level falls slowly and the bed steeps KONO-style, preventing under-extraction. Coffee from this dripper has a good mouthfeel and leans balanced.

Technique: bloom with 28g of water for 30 seconds, pour to 123g and pause, then continue to 228g. Remove the dripper just before the bed surfaces. Total extraction time: 2 minutes.

Flavor: clear fermented wine aroma, a rice-wine entry with slight plum acidity, flavors leaning toward cocoa, almonds, and nuts, caramel sweetness — an overall sense of balance.

Summary

The three drippers emphasize different strengths. V60 gives the richest, most varied flavor layers; the cake dripper holds good fruit acidity while performing best on body; the Ice Dripper shows the strongest fermented wine aroma and the most pronounced sweetness.

In short, for this Bach lot:

Flavor: V60 > Cake > Ice Dripper

Balance: Ice Dripper > Cake > V60

Mouthfeel: Cake > Ice Dripper > V60

FrontStreet Coffee Recommendation

Honey processing itself evolved from Brazil's semi-dried (pulped natural) method — removing the skin and drying the beans still coated in mucilage, which shortens drying time while avoiding the off-flavors of uncontrolled fermentation. Brazil's FrontStreet Coffee Cerrado is a classic example, showing cream, peanut, nuts, and chocolate. Costa Rica borrowed the technique and refined it by varying how much mucilage is retained and how long the beans dry, splitting the family into black, red, yellow, and white honey — and eventually the more demanding raisin honey process, which exceeds even black honey (a minimum of 2 weeks under shade cover, turned regularly to prevent uneven heating and over-fermentation) in difficulty.

For a taste of raisin honey processing, FrontStreet Coffee recommends the Musicians Series Mozart: a pre-dried, 100%-mucilage lot bursting with hot-fruit sweetness, showing osmanthus, pineapple, and raisin aromatics across pour-over, cold brew, or moka pot. And if you love Geisha, the Strawberry Candy blend pairs Panama Geisha's classic orange-blossom honeyed tones with a Costa Rican raisin-honey component — grape and dried blueberry aromatics, soft fruit acidity, an almond finish, and obvious sweetness throughout.