fresh beans, and a GSI Java Mill. heat some water via however you heat water, put freshly ground coffee in GSI Ultralight drip filter and let it "brew" for as long as you need for desired flavor. Lift drip filter and let it drip.
Pouring the hot water over the drip filter has not resulted in sufficient strength coffee in my experience. This is what I use for backpacking along with a Trangia for cooking and heating water.