[euroderf]

Coffee and sugar are like oil and water: you can try all you want to mix them but they will never form a whole.

No matter how long you stir it... you take a sip, and there's a coffee flavor over here and a sugar flavor over there.

[iKlsR]

Disagree, I use a tsp of cane sugar in mine, you can't agitate it efficiently by hand and it needs to be piping hot to help it dissolute. You need something like a cheap $10 handheld milk frother/mixer or something that can get into it better than your hand going anti-clockwise. I typically add a small amount of hot water and get a thick sweet enough paste then add more hot water if I'm doing instant and for ground the same but add a strain step at the end.