How to Brew Coffee Like a Japanese Master

You’ve heard it a thousand times: ‘It’s all about how you brew it.’ But when it comes to making a truly great cup of coffee—rich, aromatic, balanced—what really matters? Two top Japanese coffee experts, Hashimoto Tomonori and Matsushita Shota, recently shared their hard-won techniques in Chongqing, revealing the specifics behind water temperature, roast duration, bean selection, and even how you should actually drink your coffee.

Here’s the short answer: brew with water at 88°C, use beans roasted for no more than 16 minutes, and drink your coffee soon after roasting—ideally within two weeks—for peak flavor. Don’t dump all the water in at once; pour it in slowly. And contrary to wine-style sipping, you’re better off taking larger sips, especially in the morning or early afternoon.

Why Bean Quality Matters More Than You Think

Coffee expert Hashimoto Tomonori emphasizes that bean quality is the foundation of flavor. The size, shape, and natural sheen of the beans directly affect the taste and aroma of your cup. Among the thousands of coffee varieties, he singles out Indonesian Mandheling beans as particularly well-suited to mainland China—especially in flavor-forward cities like Chongqing. These beans produce a cup that’s full-bodied, with a rich, bold aroma that stands up to stronger palates.

The Roast Window: Timing Is Everything

Hashimoto also stresses that roasting is far from a set-it-and-forget-it process. For the best results, coffee beans should be roasted for 15 to 16 minutes—no longer. Going beyond that risks over-roasting, which leads to burnt, ashy flavors. Properly roasted beans, such as well-executed Mandheling, emerge from the roaster with deep aromas of aged wood, chocolate, and caramel. That sweet spot between 15 and 16 minutes is where complexity and balance develop without tipping into bitterness.

The Ideal Water Temperature for Brewing

When it comes to actually brewing the coffee, temperature is critical. Hashimoto recommends aiming for 88°C. That’s the sweet spot where extraction balances acidity and sweetness without pulling out excessive bitterness. He also advises against pouring all the hot water in at once. Instead, use a gentle, controlled pour—small streams rather than a single dump—to ensure even saturation and a more uniform extraction.

Freshness: Why Two Weeks Makes All the Difference

Both masters agree: freshness is non-negotiable. Hashimoto says you should buy only as much roasted coffee as you’ll use in two weeks. After that, the beans start to lose their volatile aromatic compounds through oxidation, resulting in a duller, muddier cup. Waiting too long between roast and brew is one of the easiest ways to sabotage your coffee’s potential.

Drink Like a Pro: Big Sips, Not Sips

Matsushita Shota challenges the notion that coffee should be sipped slowly like wine. Instead, he encourages drinking it more like tea—take larger mouthfuls. Your body can handle around three cups per day, ideally consumed in the morning or early afternoon when caffeine can offer the most benefit. He also notes that mood and mindset influence how you perceive flavor, so the same coffee brewed by the same person can taste different depending on context. And if you’re sensitive to caffeine, skip the evening cup.

Frequently Asked Questions

What’s the best water temperature for brewing coffee?

The ideal brewing temperature is 88°C. This temperature extracts the right balance of flavors without over-extracting bitter compounds. Avoid using boiling water, which can scorch the grounds and ruin the cup.

How long should coffee beans be roasted?

Coffee beans should be roasted for 15 to 16 minutes. Going beyond 16 minutes increases the risk of over-roasting, which leads to burnt flavors and a loss of complexity. Properly roasted beans develop aromas of chocolate, caramel, and wood.

How long are roasted coffee beans fresh?

For the best flavor, use roasted coffee beans within two weeks of roasting. After that, oxidation causes the aromatic compounds to degrade, resulting in a flatter, less vibrant cup. Buy only as much as you’ll use in that timeframe.

Should I sip coffee slowly or drink it quickly?

According to expert Matsushita Shota, you’re better off drinking coffee in larger sips, similar to tea. Sipping slowly like wine isn’t necessary. Aim for about three cups per day, ideally in the morning or early afternoon for a caffeine boost.

Why are Indonesian Mandheling beans recommended?

Mandheling beans, especially from Indonesia’s Sumatra region, are well-suited for bold, flavor-forward palates. They produce a rich, full-bodied cup with strong aromas, making them a great choice for regions like Chongqing that prefer stronger coffee profiles.

Does my mood affect how coffee tastes?

Yes, says Matsushita Shota. The same coffee brewed by the same person can taste different depending on your mood or mindset. While the base flavor profile remains, subjective perception of taste can shift with your mental state.

Recommended FrontStreet Beans for Mandheling Fans

FrontStreet Coffee’s Lintong Mandheling brings spice, black chocolate, and caramel notes with a sweet finish—perfect for fans of bold, traditional Indonesian coffee. For a more refined cup, the PWN Golden Mandheling is meticulously sorted for uniformity and boasts toasted bread, pine, caramel, and cocoa flavors with a long, sweet finish. Both beans deliver the rich, full-bodied taste that Mandheling is known for. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.