Dimua - Blend of Tithes and Non-Tithe Materials
Please note that the term "Terumah" refers to a tithe removed from produce and given to a Kohen, "Dimua" refers to a blend of tithes and non-tithe materials, and "Challah" refers to a tithe removed from dough and given to a Kohen.
Links
The Status of Blends
Whether a blend of Terumah and other items has the legal status of Terumah, Biblically or Rabbinically: Pesachim 44a
Requirement in Challah from Dimua: Pesachim 37a
Whether one may mentally set aside one end of a Blend as Terumah, and then eat from the other end: Shabbat 142a-b
Considering an act of fixing Dimua on Shabbat, as a violation of Fixing Items on Shabbat: Shabbat 141b, 142a
Whether an item from Dimua which falls into another mixture is considered like real Terumah to make the other mixture into Dimua, or is only considered to contain the same percentage of Terumah as was in the original mixture: Shabbat 142a; Temurah 12a [2x]
A case in which a unit of Terumah sourdough falls into dough, in a measure sufficient to leaven that dough, and then a piece of that dough falls into another dough: Pesachim 26b-27a; Temurah 12a [2x]
What happens if one removes the Terumah element from a dough containing Terumah and non-Terumah sourdoughs: Pesachim 27a
In a case where one measure of Terumah falls into 100 of ordinary produce, and then another measure falls in before the first could be removed, whether this is as 1 falling into 101 because he only had to remove the first entry in order to fix the Ordinary Produce: Shabbat 142a
Using a loaf from which a piece was removed in order to permit use of the rest of the mixture, for the meal merging areas to permit transportation between them on Shabbat: Eruvin 81a
Credibility of an am ha'aretz to testify regarding mixtures containing tithes separated from demai: Ketuvot 55b-56a
