But I’d recommend keeping to batches four cups or larger, which on this device yields about two 8-ounce coffee mugs. The Aarke says it’ll make a single-mug, “2-cup” brew, but honestly I ...

Size: One consideration is how much coffee or tea you want to transport and how heavy a mug you're willing to carry. Those going through two or three cups of coffee each morning should go for a 16 ...