I tried to duplicate DD iced coffee at home. I had a cheapo coffee machine though. I used bottled water and doubled the amount of coffee I would use for hot coffee. That worked out okay, but still not as good as DD. Since then, my coffee machine has broke and I've been using a percolator that is meant for camping. That's what I use if I want to have coffee at home. I like the flavor of the coffee from the percolator but I don't like the grinds that get in it.
Oh you poor deprived waif. Come to my house in the morning, I use fresh French Roast beans in a French press. Ground just before brewing with a smattering of cardamom seeds. I'll set ya up.
We'll get all caffeinated and then we'll post a gazillion threads as soon as we see Longknife show up.