The Resupply Blog

How Long Does Cold Brew Last? (And How to Tell When It's Gone Bad) TL;DR Homemade cold brew lasts 7 to 14 days refrigerated. Cold brew concentrate runs 10 to 14 days. Store-bought sealed stays good until the printed date....

Coffee vs. Matcha: A Direct Comparison (From the Coffee Side) TL;DR Coffee delivers more caffeine (95-200mg vs. matcha's 25-70mg), faster onset, and far more flavor range. Matcha provides smoother, longer-lasting energy via L-theanine and edges out coffee on antioxidant density....

Black Coffee and Weight Loss: What the Research Actually Says TL;DR Black coffee has a real, documented effect on weight loss — modest, not miraculous. Caffeine raises resting metabolic rate 3-11% and increases fat oxidation. It also suppresses appetite for...

Coffee Martini Recipe: How to Make One That's Actually Worth Drinking TL;DR A coffee martini uses 2 oz vodka, 1 oz coffee liqueur (Kahlua), and 1 oz fresh espresso, shaken hard with ice and strained into a coupe glass. The...

Robusta vs. Arabica: What's the Actual Difference? TL;DR Arabica has better flavor: more complex, less bitter, with natural sweetness and higher acidity. Robusta has roughly double the caffeine and a harsher, more bitter taste. Specialty coffee uses Arabica. Cheap commercial...

Is Decaf Coffee Actually Caffeine-Free? (No. Here's Why.) TL;DR No. Decaf coffee is not caffeine-free. The FDA allows coffee to be labeled "decaf" once 97% of caffeine is removed — which leaves 2–15mg per 8oz cup depending on the decaffeination...

Coffee vs. Tea: An Honest Comparison (With a Declared Winner) TL;DR Coffee delivers more caffeine faster, with greater flavor complexity and broader preparation options. Tea offers L-theanine for smoother sustained energy and lower acidity. Both have legitimate health benefits. For...

Pour Over Coffee: The Complete Brewing Guide TL;DR Pour over coffee is a manual brewing method where you pour hot water over ground coffee in a filter, controlling the speed and saturation yourself. It brews in 3–4 minutes, produces a...

The Coffee to Water Ratio Guide That Actually Makes a Difference TL;DR The golden ratio for coffee to water is 1:15 to 1:17 — 1 gram of coffee per 15 to 17 grams of water. Most people under-dose because they...

Why Does Coffee Taste Bitter? (And How to Fix It) TL;DR Coffee tastes bitter because of over-extraction, which is caused by water that's too hot, a grind that's too fine, or a roast that's unforgiving of brewing errors. Fix the...