by Potjeh » Thu Dec 17, 2009 12:21 pm
There's a bug with ovens (and smelters, kilns and finery forges), where items left inside will "cook" even if there's no fire. So, if you leave bread dough in an oven for two ticks (~6 minutes per tick) it will get baked with just one stick. It will never cook completely without the final branch, and the final branch will never burn it (so it's safe to light the oven with one branch even if the dough has been in there for days). This can be used to great effect in smelters, reducing your coal consumption by 75%. Not much point in saving branches since they're infinite, and if you just use the specified amount for baking (1 for honeybuns, 2 for cakes, 3 for bread, RoBs and pirogis) you don't have to keep track of time.
As for branch quality, fuel quality plays a big role in the quality of the finished product. Oven quality does too, so get yourself some good bricks ASAP.

Bottleneck