Quality takes time. One bean at a time.
A field guide to India's major coffee cultivars — SLN-795, SLN-9, Chandragiri, Kent, and S-274 — with flavor profiles, regional distribution, and ICB catalog data.
Variety names are appearing on Indian specialty bags more often than they did five years ago. SLN 795, Sln. 9, Chandragiri, S-274 — these labels carry real information about what's in the bag, but no widely available reference connects them to what buyers should expect. Unlike processing method or origin, which now have reasonable documentation across the specialty ecosystem, variety is almost never explained for the Indian consumer.
This article documents the major Indian coffee cultivars: their genetics, where they're grown, and what they tend to produce in the cup. The data comes from ICB's catalog of 921 coffees, 306 of which carry variety data. That two-thirds of the catalog carries no variety disclosure isn't a platform gap — it reflects how most Indian coffee is still marketed: by processing, roast, and origin, with variety as an optional label rather than a standard one.
Naming note: SLN-795, SL795, S795, S-795, Sln. 795, and Selection 795 all refer to the same variety. Similarly, SLN-9, Sln. 9, S9, and Selection 9 are the same variety written differently. Roasters have no standardized notation. This article uses SLN-795 and SLN-9 as the canonical forms. ICB's catalog normalizes across naming variants when aggregating data.
India's dominant coffee varieties are unlike those from Ethiopia, Kenya, or Central America. Ethiopia's genetic diversity comes from wild landrace populations developed over millennia. Kenya's SL-28 and SL-34 were selected from Ethiopian-derived material by Scott Laboratories in Nairobi. India's portfolio is almost entirely the product of deliberate institutional breeding at the Central Coffee Research Institute (CCRI) in Balehonnur, Karnataka — established in 1925 and celebrating its centenary this year.
The CCRI's breeding priorities were shaped by a practical crisis: coffee leaf rust devastated Indian and Sri Lankan estates in the 19th century and remained a persistent threat through the 20th. The result was a century of crosses designed to combine rust resistance with cup quality — producing varieties with a genetic profile distinct from both Ethiopian-origin arabicas and Central American cultivars.
Most Indian arabica varieties carry the Hibrido de Timor (HdT) parentage or derive from crosses involving the S288 parent (an Arabica × Liberica interspecific hybrid). HdT appears in SLN-9 and Chandragiri; S288 appears in SLN-795. Both contribute rust resistance. The Liberica influence in S288 shapes the body-forward, structured character that runs through much of Indian arabica. SLN-9 is the main exception: its Ethiopian Tafarikela parent pulls the variety toward brightness and aromatics that other CCRI crosses don't carry.
This is why variety matters alongside processing — it sets the baseline characteristics the processing and roast work with.
SLN-795 is a cross between S288 — an Arabica × Liberica interspecific hybrid — and Kent, a Typica selection from Mysore. Developed by R.L. Narasimhaswamy at the Balehonnur Coffee Research Station, it was released in 1945-46. It represents an estimated 25-30% of India's arabica acreage and is the default variety across most of Chikmagalur. Many coffees from the region that don't list a variety on the bag are likely SLN-795.
The plant is tall, vigorous, and wide-spreading, producing oblong, bold beans — typically 60-65% 'A' grade by screen size. Partial rust resistance, yield potential of 1,500-2,000 kg/ha. The S288 Liberica ancestry contributes density and structural heaviness to the cup; the Kent parent contributes clean Typica character.
In the cup, SLN-795 tends toward balance and body rather than brightness or aromatics. Based on ICB's catalog data across 97 SLN-795 entries (normalized across naming variants), the most common roaster-reported flavor notes are fruity (15 coffees), nuts (15), dark chocolate (15), citrus (12), and toast (12). The chocolate-nut-citrus pattern reflects a structured, medium-to-full body profile. Processing shifts these notes considerably: naturals push the fruity notes outward; washed lots tend toward cleaner citrus and nut character.
The near-equal frequency of fruity, nuts, and dark chocolate — three flavor families that pull in different directions — suggests SLN-795 doesn't push strongly toward any single profile. That flexibility may be part of why it has remained the dominant planted variety: it works for roasters pursuing different cup directions without demanding a particular processing or roast approach.
Example: SLN-795 Natural
SLN-9 is a cross between Tafarikela — an Ethiopian Arabica landrace known for fine cup quality — and Hibrido de Timor. Developed at CCRI. Won India's Fine Cup Award in 2002. Tall plants with drooping branches, round bold beans, 60-65% 'A' grade. Drought-hardy and adaptable, but performs best at high altitude — the Shevaroy Hills examples, grown at 5,000-6,500 ft, represent the variety at its ceiling.
The Tafarikela parent is the reason SLN-9 drinks differently from other Indian varieties. Ethiopian genetics bring aromatics and brightness that the Liberica-influenced or HdT-Caturra-type crosses don't carry. This makes SLN-9 the closest India has to an Ethiopian-style arabica in flavor character — not identical, but directionally related.
In the cup, SLN-9 is brighter and more aromatic than SLN-795. ICB catalog data: across 77 normalized SLN-9 entries, the most common flavor notes are citrus (11 coffees), dark chocolate (10), fruity (10), toast (9), and raisin (8). The citrus-forward character and relative brightness distinguish it from SLN-795's nuttier, heavier profile. Among primary Indian varieties with meaningful sample size, SLN-9 has the highest average rating in ICB's catalog — 4.11 from 11 rated coffees, compared to 3.13 for SLN-795 from 8 rated coffees. Both samples are small; these figures are directional rather than statistical. There's also a selection effect worth noting: roasters who label and spotlight SLN-9 are typically working with traceable, lot-specific material — the kind of sourcing that already correlates with higher cup quality independent of variety. The rating gap likely reflects that curation as much as the variety itself.
SLN-9 appears across a wider set of regions than SLN-795: Chikmagalur (21 entries), Shevaroy Hills (8), Biligiriranga Hills (8), Palani Hills (5). The Shevaroy Hills examples — at the upper altitude limit — tend to show the most distinct aromatic expression.
Reference point: Badra Estates (Salem, Tamil Nadu) produces one of India's most internationally recognized SLN-9 coffees. It established the variety's fine cup reputation in global specialty markets and appears in international green buyer catalogs as a benchmark for Indian arabica quality.
Example: SLN-9 Natural, Shevaroy Hills
Chandragiri is a cross between Villa Sarchi — a compact, wind-resistant Costa Rican dwarf Arabica — and Hibrido de Timor. Developed at CCRI over 21 years of research from approximately 1986, released commercially in 2007. It has been in the ground on working estates for nearly 20 years.
The Villa Sarchi parent determines the plant architecture: compact bush with shorter branches, smaller and thicker leaves. Better suited to high winds at elevation. Recommended above 3,300 ft. 95-98% leaf rust resistance — notably higher than SLN-795. Bean grades run 20-25% MNEB (Mysore Nuggets Extra Bold), 27% 'AA', 35% 'A'. This is structurally different from SLN-795 (tall, wide-spreading) and SLN-9 (tall with drooping branches), which shapes where it can be grown effectively.
In the cup: clean and structured when washed — bright acidity, nutty, tangy, subtle floral. ICB catalog data: 48 Chandragiri entries, top roaster-reported notes fruity (8), citrus (7), nuts (6), spice (6), dark chocolate (5). The profile sits between SLN-795's heavier character and SLN-9's aromatic brightness — structured without being heavy, clean without being sharp.
Chandragiri's relevance extends beyond the traditional coffee belt. It appears in Biligiriranga Hills, Koraput (Odisha), Mokokchung (Nagaland), and Garo Hills (Meghalaya) — regions where the tall older varieties don't adapt as well to altitude, wind, and newer growing conditions. The compact architecture is what makes this expansion possible: SLN-795 and SLN-9, both tall with spreading canopies, don't tolerate high-altitude wind as effectively. Chandragiri's Villa Sarchi parentage solved a structural problem that older Indian varieties couldn't address, which is why it's the variety enabling the current northeast and Odisha sourcing wave. As specialty sourcing expands into these areas, Chandragiri is likely the variety in those bags even when unlabeled.
Kent is a Typica selection discovered on Doddengooda Estate, Mysore, by A.F. Kent in the early 20th century. Selected specifically for rust resistance — significant in an era when disease was devastating estates — and became one of the first commercially grown disease-resistant arabica varieties in India. By the 1930s it had spread to Uganda, Kenya, and Tanzania, where its resistance characteristics were valued in challenging climates.
Kent's main relevance in modern Indian coffee is genealogical: it is one parent of SLN-795 (Kent × S288 = SLN-795). The clean Typica cup character in SLN-795 comes from the Kent side of the cross. Still grown in small pockets in Karnataka and Tamil Nadu, though no longer commercially dominant anywhere.
ICB catalog: 9 entries, no rated coffees. Directional flavor pattern from flavor note data: toast, dark chocolate, almond, cacao — a classic, unadorned Typica profile. Its rust resistance, strong enough for the 1920s, has been superseded by HdT-based genetics in newer varieties.
S-274 is a Robusta (Coffea canephora) selection from a Sri Lankan collection, and the first Robusta variety released by the Indian Coffee Research Station, dating to the 1940s. Selected for bold beans, high yield — double the family mean at the point of selection — and wide adaptability. Most South Indian filter coffee, including the pre-ground blends used in traditional brass filter sets, is built on S-274 Robusta from Kerala and Coorg, typically blended with chicory. Most South Indian coffee drinkers have been drinking this variety throughout their lives without knowing the name.
India is one of the few countries with an active fine Robusta program, and S-274 is the variety at its center. The Coffee Board of India's India Kaapi Royale designation grades screen-17-and-above Robusta to specific cup quality requirements; S-274 is the primary variety underlying this grade. Several European green importers now list Indian Robusta as a distinct specialty origin rather than aggregating it with commodity grades.
In the cup, estate-grown S-274 processed as single-origin produces characteristics that differ from commodity Robusta: chocolate, caramel, nuts, spices, with a creamy body and long finish — the best examples show prune and tobacco notes in the aftertaste. Higher caffeine content and body than arabica are features in context, not defects. Filter blends use S-274 for exactly this density and structure.
India Kaapi Royale: The Coffee Board of India's premium Robusta designation specifies minimum screen size 17, traceable origin, and cup quality requirements. S-274 is the primary variety behind this grade. It represents fine Robusta at the upper end of what Indian Canephora production reaches.
Three additional varieties appear across Indian specialty bags with enough frequency to document:
Cauvery is a Catimor-type variety developed at CCRI, named after the Cauvery river. Compact, early-bearing, and disease-resistant. More common in mid-altitude estate blends and traditional trade coffee than in specialty single-origins. ICB catalog: 8 entries. Directional flavor pattern: spice, caramel, dark chocolate, raisin.
Catimor and Sarchimor are HdT-based crosses bred primarily for disease resistance and yield. Cup quality is variable and generally rated lower than SLN-9 or SLN-795 in specialty contexts. ICB catalog: 18 normalized entries. Directional flavor pattern: nuts, orange, milk chocolate, toast. Some roasters use the term interchangeably; they are distinct crosses but share the Timor hybrid parentage.
CxR hybrids (SLN-6, SLN-5B) are Robusta × Arabica interspecific crosses developed at CCRI — unusual globally. They combine Robusta's disease resistance and caffeine density with some Arabica cup characteristics. Appearing on experimental lot bags from a small number of specialty roasters. ICB catalog: SLN-6 has 7 entries, SLN-5B has 9. Not enough rated data to establish flavor patterns reliably. Interspecific hybrids of this kind are rare in commercial specialty coffee globally — most producing countries work exclusively within species. India's CxR program represents a category of genetic material that few other origins have developed to commercial scale.
When a variety name appears on an Indian specialty bag, it's one variable in a three-part equation: variety + processing + roast level. No single variable determines the cup. A natural-processed SLN-9 from Shevaroy Hills at light roast will taste markedly different from a washed SLN-9 from Chikmagalur at medium. Variety sets the flavor archetype and ceiling; processing and roast determine how much of that potential is expressed and in which direction.
Naming decoder:
All of these refer to the same variety: SLN-795 / SL795 / S795 / S-795 / Sln. 795 / Selection 795 / SLN. 795
All of these refer to the same variety: SLN-9 / Sln. 9 / SLN 9 / S9 / Selection 9
Working mental model for the four main varieties:
