I am pretty sure that most baking was done in fire brick ovens, like the Amish do now.
They cooked food in coal or wood fire ovens.
Some consumers favored gas ranges over electric ovens because food could be cooked faster on a gas range, and gas ovens did not interfere with other electrical appliances. A gas range also left no residual heat
Yes, electric ovens better than gas.
anything
no it is not a better oven because electric oven only make the pot hot not actually heating it so therefore the stove ovens are way way better than electric ovens.
Electric ovens have a self-cleaning mode that gas ovens usually don't have, and if they do, they are expensive. Most users prefer electric ovens.
they cooked them in clay ovens
Custard pies are a cooked mixture of milk, cream and egg yolk.
fire
Yes, the olden people did use special Dutch Ovens to cook pies in the 1800's. I hope this helps!
240V
some of them do..