After I posted about making coffee ice cubes, a good friend sent me this link to making cold-brewed coffee. And I'm hooked.
In short, you grind your coffee very fine, and put it in a vessel with water, seal the vessel, and leave it at room temp for 12-24 hours. At the end of that time period, filter, add ice, and a little milk, and drink. Medium roast is better than dark roast.
Because it's cold-brewed, the extraction of the more bitter oils is kept to a minimum, and the end result is some incredibly smooth coffee.
BUT... I don't use his recipe. The article calls for a ratio of 1:1 coffee:water by volume, using coffee ground finely for use in a drip coffee maker.
I'm lucky enough to have a really nice coffee grinder that will do an espresso grind. Since the author lists surface contact with the coffee as a factor in brewing, I figured finer grinds than normal would work better. With the grind setting I use, I've only needed to use my standard hot-brewing ratio. (3/4 cup coffee/ 12C of water) I may try playing with the ratios a bit, but this has worked well so far. For those of you without a fancy grinder, look around for a grocery store that offers whole bean coffee, AND has a grinder in the store. You should be able to get a fine enough grind that way.
I also don't bother with using a French press. Because I'm using less coffee, I don't need to extract such a high amount of grounds. And because I'm using such a find grind, the press wouldn't filter much out anyway. So, I use a 6 cup mason jar, and pour it through the top of my regular coffee maker, and filter it that way.