We may not roast meat, onions or eggs, unless there is sufficient [time] for them to become roasted while it is yet day. We may not place bread in the oven near nightfall, nor a cake upon coals, un-less there is sufficient [time] for its upper surface to form a crust while it is yet day. R’ Eliezer says: Sufficient [time] for its bottom [surface] to form a crust.

We may lower the pesach sacrifice into the oven near nightfall, and we may ignite [with chips] the fire of the pyre in the [Temple] fire chamber. But in the country, [this may not be done unless there is] sufficient [time] for the fire to take hold of most of them. R’ Yehudah says: With charcoal [it is permitted as long as there is sufficient time for the fire to take hold of] any amount.