# According to Sephardim, one should take off Challah with a Bracha when making a dough with 3.44 pounds (1560 grams) or more of flour and it is a pious practice to remove Challah without a Bracha when making a dough with 2.65 pounds (1200 grams) or more of flour.<Ref>Yalkut Yosef YD 324:6</ref> However, some say that one should only remove Challah with a Bracha for dough that is 5.29 pounds (2400 grams) and without a Bracha for dough that is 3.67 pounds (1666 grams).<ref>Rav Modechai Eliyahu (comments on Kitzur Shulchan Aruch 35:2</ref>
# It is forbidden to intentionally make less than the shiur challah, the minimum amount of dough which would obligate one to separate Challah.<Ref>Rambam Bikkurim 6:15, Shulchan Aruch Y.D. 324:14, Yalkut Yosef YD 324:7. Shulchan Aruch Y.D. 324:14 writes that it is forbidden to make Challah less than the requisite amount to remove Challah in order to absolve oneself of the Mitzvah. The Gra 324:23 points out that this is based on Yerushalmi Challah 3:1 and Pesachim 48b.</ref> The poskim explain that this only applies if one wants to bake a large amount and is intentionally baking it in two parts separately in order to exempt oneself from the mitzvah of Challah, however, there's nothing wrong with baking a small amount if that's all one wants to bake now.<ref> Shach 324:25 and Taz 324:17 write that someone who only has a small piece of dough is nonetheless allowed to bake it and doesn't have to worry about this prohibition since one's intention isn't absolve oneself from the mitzvah. Aruch Hashulchan 324:41 explains further that the entire prohibition is only for someone who wants to bake a shiur challah and intentionally absolves himself from the mitzvah by baking it in halves. Mishna Halachot 8:228 and 19:112 echoes this sentiment explicitly that there's nothing wrong at all with someone who only wants to bake a small amount less than the shiur Challah.</ref>
# If one makes less than the amount required in Challah in separate loaves, but then puts them back into the same vessel, the vessel combines these pieces to make a Shi'ur of Challah.<ref> Mishna Challah 2:4, Kitzur Shulchan Aruch 35:3; See Pesachim 46a-b </ref>.