I like Mt. Hagen (a German brand) but have come to prefer Medaglia d'Oro instant espresso. It's available in every supermarket around here (I have to drive 30 miles RT to get Mt. Hagen). I use it when I'm traveling, but, as mentioned, not when backpacking nor at home.

I agree with coffee grounds (and tea leaves)--pack 'em out, heavy or not! At least tea bags are a lot easier to dry out!
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May your trails be crooked, winding, lonesome, dangerous, leading to the most amazing view--E. Abbey