Is Freshly Ground Coffee Actually Bad for You?

Walk into any specialty coffee shop and you’ll be greeted by the rich aroma of freshly ground beans — a sensory promise of quality and freshness. But behind that inviting scent lies a less obvious concern: just how much caffeine are you really drinking? According to lab tests in Hong Kong, the answer might be more than you expect — and more than is healthy.

The short answer: A standard medium cup (around 260–310ml) of freshly brewed coffee from high-street chains can contain between 108mg and 197mg of caffeine. The highest recorded was Starbucks’ medium cup at 197mg. Drinking three such cups in a day exceeds the recommended maximum caffeine intake for adults.

What the Tests Found

Last month, the Hong Kong newspaper Ming Pao tested five major coffee chains: Starbucks, Pacific Coffee, Pret A Manger, McDonald’s McCafé, and Delifrance. Each served a freshly ground, medium-sized hot coffee. The results showed significant variation:

• Starbucks (260ml medium): 197mg caffeine
• McCafé (280ml medium): 164mg caffeine
• Pacific Coffee (290ml medium): 153mg caffeine
• Pret A Manger (310ml White Americano): 108mg caffeine
• Delifrance: Not specified in results

That means a standard coffee from Starbucks delivers nearly double the caffeine of a lighter option like Pret’s White Americano.

How Much Caffeine Is Too Much?

Health experts agree that adults should limit caffeine intake to 300–400mg per day. Exceeding that regularly can lead to what’s known as “caffeine syndrome” — a range of symptoms caused by overstimulation of the central nervous system. The European Food Safety Authority and nutritionists in Hong Kong, including registered dietitian Li Jingxun and poison control expert Liu Feilong, both cite this threshold.

Symptoms of caffeine overload include anxiety, restlessness, insomnia, muscle tension, hand tremors, heart palpitations, and irritability. These effects arise because caffeine overstimulates the brain’s alertness systems.

Why Shops Don’t Disclose Caffeine Levels

Unlike Taiwan — which introduced a traffic-light labeling system for coffee caffeine content in August (green for under 100mg, yellow 100–200mg, red over 200mg, with a recommendation to limit red-labelled drinks to one per day) — coffee shops in Hong Kong do not publicly disclose how much caffeine is in their drinks. This lack of transparency makes it hard for consumers to make informed choices, especially those monitoring intake for health reasons.

The Hong Kong Food and Environmental Hygiene Department stated that while caffeine labelling isn't a food safety issue, it welcomed efforts to provide more nutritional information. The Consumer Council also supported such measures for better consumer rights.

Frequently Asked Questions

How much caffeine is in a typical cup of freshly ground coffee from a coffee chain?

Tests in Hong Kong found that a standard medium cup (about 260–310ml) of freshly brewed coffee contains between 108mg and 197mg of caffeine. Starbucks had the highest level at 197mg per 260ml cup, while Pret A Manger’s 310ml White Americano had the lowest at 108mg.

Is 197mg of caffeine a lot?

Yes, 197mg is considered a high amount of caffeine for a single cup. Health authorities recommend a daily maximum of 300–400mg for adults, so one Starbucks medium coffee takes up nearly half or more of that limit.

What are the symptoms of too much caffeine?

Excessive caffeine intake can cause “caffeine syndrome,” with symptoms like anxiety, restlessness, insomnia, muscle tension, hand tremors, heart palpitations, and irritability. These occur because caffeine overly stimulates the central nervous system.

Why don’t coffee shops list caffeine content on menus?

In Hong Kong, coffee shops are not required to disclose caffeine levels. Unlike Taiwan, which uses a colour-coded system to indicate caffeine content, there is currently no mandatory labelling in Hong Kong, making it difficult for customers to assess their intake.

How many cups of coffee is it safe to drink per day?

Health experts suggest limiting total daily caffeine intake to 300–400mg. Depending on the coffee, that could mean just one or two cups — for example, a 197mg Starbucks medium would use up most of your daily safe limit on its own.

FrontStreet Coffee Picks for Caffeine Awareness

For coffee lovers monitoring their caffeine intake, FrontStreet Coffee offers single-origin options with distinct flavour and clarity. Try the Ethiopia Yirgacheffe for bright citrus and floral tones at a medium roast level — ideal for a lighter cup. The Kenya Little Tomato brings winey acidity and berry notes, also medium roasted for smooth intensity. Both let you enjoy specialty coffee’s qualities without extreme roast or heavy caffeine loads. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.