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Vacuum-sealed coffee beans usually stay at peak quality 6–12 months, with drinkable flavor often 1–2 years if kept cool and dark.

Coffee can raise blood pressure for 1–3 hours, with the peak near 30–60 minutes; dose, tolerance, and meds shift the curve.

Caffeine often feels lighter after 4–6 hours, but dose, timing, and your metabolism decide how long the caffeine wears off for you.

Tea rarely turns unsafe when kept dry, but taste drops; use green tea within 6–12 months, black tea within 1–2 years.

Lemon juice can stay usable from days to months, and the “bad” point is usually flavor loss or visible spoilage.

Most coffee beans taste their best from day 3 to week 4 after roast; air, heat, and grinding make them go stale sooner.

Brewed coffee keeps for about 2 hours at room temperature, or up to 3–4 days in the fridge if it’s plain and sealed.

Unopened coffee beans usually taste best within 3–12 months, depending on roast date, package seal, and storage heat and moisture.

Steep french press coffee for 4 minutes, then shift to 3–5 minutes to match grind, roast, and the strength you like.

Whole coffee beans taste their best for about 1–3 weeks after opening when kept sealed, cool, and dry, with longer life from careful freezing.