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No—flavored coffee in espresso machines risks clogging parts and leaving hard-to-remove residues.

Yes, you can use French-press coffee in a drip machine, but adjust grind and filters for best results.

Yes, espresso-ground coffee works in a moka pot, but a slightly coarser medium-fine grind keeps flow steady and bitterness in check.

Yes, glass can handle hot coffee when you match the right glass type to the heat and avoid sudden temperature swings.

Yes, you can juice frozen celery, though texture softens; blanch, freeze well, and thaw safely for clean flavor and steady yield.

Yes, ground coffee works in filter machines when you match a medium grind, sensible ratios, and clean gear.

Yes, generic K-Cup-style pods can brew in many Keurig machines, but model and labeling decide compatibility.

Yes—ground coffee works in a cafetière when you mind grind size, ratio, water heat, and a clean plunge for a clear, rich cup.

Yes, you can use ground coffee in a Keurig 2.0 using the My K-Cup reusable filter and a medium grind.

Yes, frozen produce works for juicing when lightly thawed; expect modestly lower yield with nutrition close to fresh.