human
what is challa bread?
gpt
It’s a type of Jewish ceremonial bread, traditionally made with oil instead of butter, for religious dietary requirements.  There’s also a specific way to make it with specific tools, which is sometimes kept in families.
human
what is a good recipe for it?
gpt
Here’s an example from Brownielocks:

Ingredients:
For a 2-pound loaf, you’ll need:
5 tbsp. olive oil or water
1 cup (8 oz) whole or skim milk
2 tbsp. sugar
1 tsp. baking
human
can i add butter to the recipe if i want?
Yes.
I think the traditional recipe does require oil.