Cohn, Jacob. The Royal Table - VWC: Faculty/Staff Web

AGRICULTURAL PROHIBITIONS 121
bine with barley and millet, but not with rye or wheat;
while millet combines with any or all of them to form the obligatory
volume.11 Challah must not be taken from one
kind of grain in order to exempt another kind when both
are under the obligation; e.g., when one has two batters,
one of wheat and the other of barley, and each contains
an obligatory volume, challah must be taken from each
batter separately. 12
The obligation to separate challah does not rest upon
flour, but upon dough, hence challah separated before the
water is added is of no account. 18
It is customary to wait
until the end of the kneading before making the separation.
1* In case one has failed to separate challah from the
dough, one must separate it from the bread after it has
been baked, 15 Only dough such as is fit for the baking of
bread is under this obligation, while batters used for cake-
making are exempt. 16 Dough meant for any purpose other
than human consumption, even though it would fall under
the obligation if it were meant for bread, is totally ex-
However, when the original intent was to bake
bread and then the baker changed his mind and decided
empt. 17
to bake a cake or use the batter for non-human consump-
tion, challah must be taken, insomuch as the obligation,
incurred at the moment when the flour is mixed with water,
cannot be abrogated at a later time by a mere change of
mind. 18 One should guard against preparing
a batter in
11
Y. D. 324, 2. Taz ad loc. subsec 2. Maimonides differs somewhat
and believes that millet, rye, and oats combine.
M
Mishnah Kilayim I; Y D ibid.
*
Mishnah Challah II, 5; Yad Bikkunm HI, 1. Y. D. 327, 1-2.
"
Rabed to Yad ibid.; Y. D. ibid. 3.
15 Sifri Numbers XV. Y. D, ibid 5.
M Mishnah Challah I, 4. Y. D. 329 1 1 ff,
" Sifri ibid.; Mishnah Challah I, 8; Y D. 330, 8.
Yad ibid VI; Y. D. 329, 3.