The fossil record tells us: - That there lived different types of lifeforms in the past than today. - That life changes over time. - That life shows diverging progressioâ¦ns of morphological traits over deep time. - That past life adhered to the same nested hierarchies we also find in extant life.
If you are beating eggs whites and don't have cream of tartar, you can substitute white vinegar (in the same ratio as cream of tartar, generally 1/8 teaspoon per egg white). It is a little more problematic to find a substitute for cream of tartar in baking projects.
It is correct (as you found out) that you can substitute baking powder for tartar+soda. BUT: despite the Joy of Baking, the reason MOST classic snickerdoodle recipes have cream of tartar specified is not because of modernity but because that cream of tartar is actually part of this cookie's flavor.