Acts which could Create Leaven [Chametz]

Talmudic baking

Soaking Bran in water, for roosters or for bathing: Pesachim 39b

Placing dry bran on wet skin for bathing: Pesachim 39b

Boiling Bran in water, for the roosters: Pesachim 39b

Soaking barley in water: Pesachim 40a, 42a

If one soaked barley in water: Pesachim 42a

Soaking wheat in water: Pesachim 40a

Specifically soaking the wheat for Matzos, so that it will require guarding for the Matzah for the Mitzvah: Pesachim 40a

Chewing wheat to place on a wound: Pesachim 39b

Placing burnt grain ["Kimcha Di'Avishuna"] in boiling water: Pesachim 39b, 40b

Adding flour to a food while it is cooking, before or after adding vinegar: Pesachim 40b

Boiling 2 kernels of grain together in water: Pesachim 39b-40a

Singeing 2 sheaves of wheat together; liquid may leave one, and leaven the other: Pesachim 40a

Drying grain in a box in an oven; where the generated liquid can/can't drain: Pesachim 40a

Putting flour into Charoses or into a Mustard Concoction; eating it if it was already done: Pesachim 40b-41a

If it starts to bloat, place it in cold water: Pesachim 48b

Amount of wheat/barley dough, of varying qualities of grain, which one can prepare at one, whle keeping it from becoming Leaven: Pesachim 48a-b

[Not] Taking one's hands away from the dough during the preparation: Pesachim 42a

Handling of dough prevents leavening: Pesachim 48b

Kneading in the sun: Pesachim 42a

Kneading in warm water: Pesachim 36a, 42a

What to do with the dough if it was kneaded in warm water: Pesachim 42a

Kneading in water from a kettle: Pesachim 42a

Kneading in water that was left out overnight, instead of freshly drawn well-water: Pesachim 42a

Forming breads in designs: Pesachim 37a

Dough struck by a repetitive drip: Pesachim 39b

Pouring out the water used by the baker in working the dough: Pesachim 40b, 42a

Using separate vessels for water to use in treating the dough and for water used to cool off her hands: Pesachim 42a

Baking thick bread: Pesachim 36b-37a

Baking pre-baked bread: Pesachim 39b

Boiling pre-baked bread: Pesachim 39b

Baking pre-boiled bread: Pesachim 39b

Having a group of people preparing and baking their own dough, separately, vs. requiring them to work on one dough at a time for maximum speed: Pesachim 48b, 116a



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