Nutritional Profile of Specialty Coffee Liquor

If you’ve ever wondered what’s actually in your cup of brewed coffee—beyond the aroma and acidity—you’re not alone. Most coffee drinkers focus on flavor and origin, but understanding the basic nutritional content can help explain everything from calorie count to why coffee has a mild diuretic effect. This article breaks down exactly what’s in a typical cup of specialty-brewed coffee, based on measured data per 100 grams of liquid.

The quick answer: In 100 grams of brewed coffee, there are 99.5 grams of water, 0.2 grams of protein, 0.1 grams of fat, 0.1 grams of ash, trace sugars, 3 mg calcium, 4 mg phosphorus, 2 mg sodium, 0.01 mg vitamin B2, and 0.3 mg niacin. Using 10 grams of coffee dissolved in hot water, the caffeine content is 0.04 grams (40 mg) and tannin content is 0.06 grams (60 mg).

What’s Actually in a Cup of Brewed Coffee?

When specialists analyze brewed coffee—not the beans, but the actual hot liquid you drink—they measure it by weight. Per 100 grams of brewed coffee liquor (the liquid after extraction), the composition is overwhelmingly water: 99.5 grams. That leaves just 0.5 grams to account for everything else. Within that tiny fraction, you’ll find 0.2 grams of protein, 0.1 grams of fat, and 0.1 grams of ash (mineral content). Sugars are present only in trace amounts. It’s a low-calorie drink by nature—but it does carry measurable micronutrients.

Key Micronutrients in Coffee

Though minimal, brewed coffee does contain several essential minerals and vitamins. Every 100 grams includes:

• Calcium: 3 milligrams
• Phosphorus: 4 milligrams
• Sodium: 2 milligrams
• Vitamin B2 (Riboflavin): 0.01 milligrams
• Niacin (Vitamin B3): 0.3 milligrams

These micronutrients contribute to coffee’s minor but real role in daily nutrient intake, especially for regular drinkers. While not a significant source of calories or macronutrients, these elements add up over multiple cups per day.

Caffeine and Tannin Content in Standard Brewing

When you brew coffee using 10 grams of ground coffee dissolved in hot water—the typical amount for a single serving—the extracted compounds include:

• Caffeine: 0.04 grams (or 40 milligrams)
• Tannins (polyphenols / sometimes called “tannic acid”): 0.06 grams (or 60 milligrams)

These figures come from controlled measurements and reflect standard brew conditions. Caffeine content will, of course, vary based on bean origin, roast level, and brew ratio, but 10g of coffee yielding ~40mg of caffeine is a reliable average for reference. Tannins contribute to coffee’s astringency and are part of its broader antioxidant profile.

Why These Numbers Matter to Coffee Drinkers

Understanding the nutritional breakdown helps clarify common perceptions about coffee. For instance, its low calorie count (essentially zero from the liquid itself) explains why black coffee fits into almost any diet. The presence of niacin and riboflavin means regular consumption may contribute marginally to vitamin intake, while the caffeine and tannin levels explain both the stimulant effect and the dry mouth sensation some drinkers experience. None of these compounds come close to the levels found in food, but their consistency across cups makes them relevant for daily consumers.

Frequently Asked Questions

How much caffeine is in 100g of brewed coffee?

In 100 grams of brewed coffee, there is 0.04 grams (40 mg) of caffeine, based on using 10 grams of coffee grounds. This aligns with standard single servings and highlights coffee’s moderate caffeine delivery per typical brew.

What nutrients are in brewed coffee?

Brewed coffee contains trace amounts of protein, fat, and sugars, along with measurable minerals: 3 mg calcium, 4 mg phosphorus, 2 mg sodium, 0.01 mg vitamin B2 (riboflavin), and 0.3 mg niacin (vitamin B3) per 100 grams of liquid. Most of the weight is water (99.5g).

Does brewed coffee contain tannins?

Yes. Every 100 grams of brewed coffee contains 0.06 grams (60 mg) of tannins, extracted from 10 grams of coffee. Tannins contribute to coffee’s astringency and are part of its polyphenol content.

Is coffee high in calories?

No. With 99.5 grams of water and only 0.5 grams of solids per 100 grams, brewed coffee has negligible calories. The small amounts of protein, fat, and sugar contribute minimally to energy intake.

How much protein and fat are in a cup of coffee?

Per 100 grams of brewed coffee, there is 0.2 grams of protein and 0.1 grams of fat. These values are very low, reflecting coffee’s nature as a low-nutrient, water-based beverage.

What’s the mineral content of brewed coffee?

Brewed coffee includes 3 mg calcium, 4 mg phosphorus, and 2 mg sodium per 100 grams. These minerals come from the water and the dissolved coffee compounds during extraction.

Recommended FrontStreet Coffees for Nutrition Context

For those curious about the base material behind these nutritional figures, try FrontStreet Coffee’s Ethiopia Humbera—a bright, juicy Ethiopian offering with notes of blueberry and citrus that highlights natural coffee compounds. Also consider the Colombia La Palma & El Tucán, which brings balance with almond and cane sugar tones. Finally, the Yunnan Huoshan Black Honey offers a lighter roasted, honey-processed profile with stone fruit and molasses hints. All three showcase the diversity of compounds that contribute to coffee’s nutrition and flavor. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.