A new mishnah, with specifications for the different grain-offerings - marheshet vs. merhavat (with the different pans for each). The first has a cover and the second does not OR the first is deep and the second is shallow (it's a machloket, of course, coming from different traditions). Plus, the pan known as the "kalbus" - with an illustration of it by Rashi! Also, a second mishnah, with the case who takes a vow to bring a grain-offering that was baked in an oven, which specifically limits the fulfillment of the vow to certain ovens.