c, the CB has a reference table for baking powder for yellow/white and one for chocolate.
I'm torn about where a spice cake would fit in.
Rose provides a "base" recipe and then scales the baking powder for each level (cake pan size)
For example, to make a 2-layer 9"x2" (level 2) yellow cake you would multiply the base by 4 and use 1 1/3 tsp per base (5 1/3 tsp)
To scale up to 2-layer 14"x2" (level 3) yellow cake, you would multiply the base by 10 and use less baking powder: 1 tsp per base (10 tsp total).
From The Cake Bible:
"The larger the pan size, the less baking powder is used in proportion to ther ingredients. This is because of surface tension. The larger the diameter of the pan, the slower the heat penetration and the less support the rising cake receives because the sides are futher from the center. Baking powder weakens the cake's structure by enlarging the air spaces, so decreasing the baking pwder strengthens the structure and compensates for retarded gelatinization and the decrease in support."
Another trick is to put a metal flower nail used to create icing roses. The metal provides a source of contact and the resulting hole is small enough to be unseen.
I'm torn about where a spice cake would fit in.
Rose provides a "base" recipe and then scales the baking powder for each level (cake pan size)
For example, to make a 2-layer 9"x2" (level 2) yellow cake you would multiply the base by 4 and use 1 1/3 tsp per base (5 1/3 tsp)
To scale up to 2-layer 14"x2" (level 3) yellow cake, you would multiply the base by 10 and use less baking powder: 1 tsp per base (10 tsp total).
From The Cake Bible:
"The larger the pan size, the less baking powder is used in proportion to ther ingredients. This is because of surface tension. The larger the diameter of the pan, the slower the heat penetration and the less support the rising cake receives because the sides are futher from the center. Baking powder weakens the cake's structure by enlarging the air spaces, so decreasing the baking pwder strengthens the structure and compensates for retarded gelatinization and the decrease in support."
Another trick is to put a metal flower nail used to create icing roses. The metal provides a source of contact and the resulting hole is small enough to be unseen.