The BrewMetrics blog
Tested coffee guides — ratios, comparisons, caffeine, and gear — to help you brew a better cup.
66 articles · page 1 of 8
Best Drip Bag Coffee Subscriptions in 2026
A drip bag subscription delivers single-serve pour over bags to your door on a schedule. Here’s what to look for, what it costs, and the best plans for daily drinkers and gift givers.
Best Gooseneck Kettles for Pour Over Coffee
A gooseneck kettle gives you the slow, steady pour that pour-over coffee demands. Here are the features that matter and picks at $30, $60, and $100+.
Japanese Iced Coffee: The Flash-Brew Method
Japanese iced coffee brews hot coffee directly onto ice, locking in bright aromatics that cold brew loses. Use a 1:15 ratio with 40 % ice and 60 % hot water for a perfect glass.
Best Last-Minute Coffee Gifts That Ship Fast
Forgot a birthday or holiday? These coffee gifts ship in 1–2 days or arrive instantly as digital gifts — from e-gift subscriptions to next-day drip bag sets.
Is It Bad to Drink Coffee on an Empty Stomach?
For most people, coffee on an empty stomach is fine. It does increase gastric acid, but research doesn’t link it to ulcers or lasting damage. Here’s what the evidence actually says.
How to Make Vietnamese Iced Coffee at Home
Vietnamese iced coffee (ca phe sua da) combines dark-roast drip coffee with sweetened condensed milk over ice. It takes 5 minutes, one $7 phin filter, and three ingredients.
Light vs Dark Roast: Flavor, Caffeine & Which to Buy
Light roasts are fruity and acidic; dark roasts are bold and smoky. The caffeine difference is negligible. Here’s how to pick the right roast for how you brew.
How to Brew French Press Coffee: Step-by-Step
A 1:15 ratio, coarse grind, 200 °F water, and a 4-minute steep — that’s the formula. Follow these six steps for a rich, full-bodied French press cup every time.
Best Housewarming Coffee Gifts for New Homeowners
A great housewarming coffee gift is something the new homeowner will actually use on day one. These picks range from $15 drip bag sets to $75 pour-over starter kits.