- If the dough contains less than 10 cups of flour (2.5 litres) in any one batch, separation of Challah is not required (1 cup = 250 ml)
- If the dough contains 10 cups of flour or more, but less than 17.3 cups (4.32 litres) of flour, Challah should be separated but without a brocha.
- If the dough contains 17.3 cups of flour or more, Challah must be separated with a brocha
- All the above are volumes. The weight equivalent is:
| Type of flour | Without Brocha | With Brocha |
| Cake Flour | 1.360kg | 2.360kg |
| White Bread Flour | 1.320kg | 2.290kg |
| Home-ground Flour | 1.245kg | 2.160kg |
| Bought Brown Flour | 1.390kg | 2.410kg |
