What Do Coffee Grades Mean?

Imagine you are standing in the coffee aisle or browsing a website, ready to buy your next bag of coffee. Suddenly, you notice a wall of random letters and numbers in the description: SHG, AA, Excelso, Grade 1. It looks less like a delicious morning brew and more like a complicated math equation.

If you have ever felt completely lost looking at these terms, don’t worry. You are dealing with the global coffee bean grading system, and it confuses a lot of people.

A Quick Note Before We Start: When the coffee industry talks about coffee grading, they are usually looking at green coffee beans, which is just the industry term for raw, unroasted coffee seeds straight from the farm! Once they are sorted, they get roasted into the normal brown beans you buy.

The biggest secret in the coffee world is that there is no single, worldwide master rulebook for coffee grades. A grade in Colombia means something totally different than a grade in Ethiopia or Hawaii. Every country has invented its own way of sorting its harvest based on its own history, mountains, and traditions.

But once you learn the basic patterns, the matrix clicks into place. Understanding these codes will help you make smarter choices at the grocery store, understand why some bags cost more, and pick a coffee you'll actually love drinking. Let's break down exactly how it works in the simplest way possible.

The Three Ways Coffee Gets Its Grade Label

To make sense of the madness, you just need to know that almost every country chooses to judge its coffee by one of three things: how high it grew, how big the bean is, or how clean it looks.

Method 1: Judging by the Mountain (Altitude)

In Central and South America, the local coffee grades are all about elevation. The rule of thumb here is simple: the higher the mountain, the better the coffee.

High up in the mountains, the nights get incredibly chilly. This cold weather slows down the growth of the coffee cherry. Because the bean inside takes a long time to mature, it becomes incredibly dense, hard, and tightly packed. These "hard beans" are prized because they are bursting with complex sugars, bright fruity notes, and amazing acidity.

• SHG and SHB (Strictly High Grown / Strictly Hard Bean): These two terms mean the exact same thing; countries just use different words. If you see this on a bag from places like Honduras or Costa Rica, it means the coffee was grown way up past 1,200 to 1,350 meters above sea level. This is the good stuff. It’s dense, lively, and highly valued by coffee lovers.

• HG and HB (High Grown / Hard Bean): This coffee grew a little lower down the mountain (around 900 to 1,200 meters). Because the weather was a bit warmer, the beans grew faster and are slightly softer. They make a fantastic, sweet, everyday cup of coffee that is smooth and easy to drink without being too intensely fruity or sour.

Method 2: Judging by the Size (The Screen Test)

If you travel over to East Africa (countries like Kenya or Tanzania) or look at a massive producer like Colombia, they don't look at the mountains to grade their coffee; they look at a tape measure.

Once the coffee beans are harvested and dried, they are poured over big metal sheets with different-sized holes in them, like a giant kitchen colander. These holes are called "screens." The coffee is shaken, and the beans fall through depending on how big or small they are.

• AA and AB: In Kenya, the largest beans that stay on top of the biggest screens are labeled AA. For a long time, people assumed that bigger beans held more flavor. The slightly smaller beans that fall through to the next level are labeled AB. Here is an insider tip: AB coffees are often just as delicious as AA coffees, but because they are smaller, they are usually a much better deal!

• Supremo and Excelso: This is Colombia’s version of the size game. Supremo beans are the big ones. Excelso is not a worse coffee; it’s just a mix of medium and smaller bean sizes.

• PB (Peaberry): Normally, a coffee cherry splits its space and grows two flat beans inside. But sometimes, nature does something weird. In about 5% of cherries, only one round, tiny bean forms. This is called a Peaberry. Because they are round like little footballs, they roast incredibly evenly, giving you a uniquely sweet and concentrated flavor.

Method 3: Judging by Mistakes (The Defect Count)

In countries like Ethiopia and Indonesia, the different grades of coffee have nothing to do with size or mountains. Instead, they are graded like a school test: you start with a perfect score, and points are taken away for every mistake.

Workers take a random 300-gram scoop of raw coffee and count the defects. Defects are things you don't want in your morning brew, like broken beans, sour fermented beans, sticks, or little rocks from the field.

• Grade 1: This is a flawless score. It means the lot has virtually zero mistakes or defects. It ensures you are getting an incredibly clean, crisp flavor profile.

• Grade 2: This is still a premium, specialty-grade coffee. It allows for a tiny handful of minor visual defects, but it still tastes absolutely phenomenal when you brew it. As you go down to Grade 3 or Grade 4, more mistakes are allowed, and those beans are usually sold cheaper for instant coffee or grocery store blends.

Spotlight on 3 Origins That Break the Rules

To truly understand how wild the global coffee bean grading system can be, let’s look at three famous coffee regions that completely do their own thing: Guatemala, Hawaii, and Yemen.

 

Guatemala: The Altitude & Hand-Sorting Experts

Guatemala relies heavily on the altitude system, run by their national group, Anacafé. Their top specialty tier is Strictly Hard Bean (SHB), which means the coffee had to be grown above 1,350 meters.

But Guatemalan coffee often comes with another set of letters: EP, which stands for European Preparation. This means that after the machines did their job, real people sat down and hand-sorted the beans to pick out any tiny defects. When you buy a Guatemala SHB EP coffee, you are getting high-mountain quality combined with incredibly neat, uniform beans.

Hawaii: The Strict Government Rules

Hawaii, especially the famous Kona coast, takes coffee grading more seriously than almost anywhere else. The Hawaii Department of Agriculture has established strict regulations for its coffee. They don't just use casual terms; they use legal tiers for their beans:

1. Extra Fancy: The biggest, most beautiful beans with practically zero blemishes. They are rare, expensive, and taste incredibly silky.

2. Fancy & Number 1: The high-quality middle tiers that give you a great, authentic taste of Hawaiian coffee.

3. Prime: This is the absolute lowest legal limit. If a bag drops below Prime, it cannot legally be labeled as "100% Kona." Prime allows for smaller bean sizes and some visual flaws, making it an affordable way to try Hawaiian coffee.

Yemen: Flavor Over Everything

If Hawaii is all about strict rules and uniform looks, Yemen is the wild west of coffee. Yemen is one of the oldest coffee-growing regions on the planet. Farmers there still grow heirloom coffee trees on ancient stone terraces carved into dry mountains. They dry the coffee naturally under the sun on their stone roofs and mill it using simple tools.

Because of this ancient process, Yemeni coffee beans look rustic, uneven, and physically imperfect. If you put Yemen coffee into Hawaii's sorting machine, it would fail instantly.

Because of this, Yemen completely rejects standard physical grades. They don't care about size or altitude lines. Instead, they grade coffee by Regional Terroir (like Harazi or Mattari, which are famous for wild, winey, and chocolatey flavors) and how high the coffee scores on a professional tasting scale. In Yemen, taste is king, and looks don't matter.

Conclusion:

In short, coffee grades are just a helpful cheat sheet on the back of your coffee bag. Whether a country labels its beans by mountain height, physical size, or visual looks, these letters give you a great starting point for picking a bag you'll love.

But remember: a grade only tells you what a raw bean looks like on the outside. It doesn’t guarantee the final flavor. A visually perfect, expensive bean can taste totally boring to you, while a weird-looking, small bean from Yemen can absolutely blow you away with sweetness.

Use these technical grades as a fun guide to try new things, but always let your own taste buds make the final rules!

Frequently Asked Questions

Q: What are the different grades of coffee available in the global market?

A: There are three main grading styles in the global coffee market: altitude-based grades (like SHG/SHB for mountain coffees grown above 1,200 meters), size-based grades (like East African AA/AB or Colombian Supremo based on screen size), and defect-based grades (like Ethiopian Grade 1 and Grade 2 based on how clean the raw sample is).

Q: How does a coffee bean grading system impact final flavor quality?

A: A grading system sets a baseline for the physical quality of the coffee. Altitude grades (like Guatemala's SHB) tell you a bean grew slowly and will have high density and bright, complex acidity. Defect-based grades guarantee that sour, moldy, or damaged beans have been sorted out, keeping your final coffee free of bitter or off-flavors.

Q: Why do countries like Yemen avoid standard physical coffee grades?

A: The ancient, traditional farming and natural sun-drying methods used by Yemen produce rustic, irregular-looking beans. Therefore, the modern mechanical sorting screens don't fit their historical farming style. Yemen coffee is valued and traded based on its specific regional terroir (like Harazi or Mattari) and sensory tasting scores rather than bean size.

Q: What is the difference between Hawaii's Extra Fancy and Prime coffee grades?

A: Under Hawaiian state law, Extra Fancy is the absolute highest quality tier, requiring the largest bean sizes and almost zero physical defects. Prime is the lowest allowed specialty tier that can legally carry a protected regional name like Kona, allowing for smaller beans and up to 20% physical imperfections by weight.