Challah

                Percent     50%     75%     100%
Bread flour     100%        255g    383g    510g
Sugar             5.5%       14g     21g     28g
Salt              1.4%        4g      5g      7g
Yeast             1.3%        4g      5g      7g
Oil               5.5%       14g     21g     28g
Egg whites                    1       1.5     2
Egg yolks                     2       3       4
Egg whites                    1       1.5     2
(for wash)

Water            45%        100g    150g    200g

Katya's notes:
    * Double the sugar