I have a Lang 48. I put in some split oak, some charcoal (about a 2 gallon coffee can's worth, I would guess), put on some lighter fluid, light it, leave the door open and let it burn for about 45 minutes. It gets up to about 350. That's okay with me though, because I like to spray a little water on the grates to steam clean them. I then shut the firebox door and adjust the dampers.
(I know some purists would not agree with lighter fluid, but trust me: after 45 minutes there is no trace of it.)