When you want to double the batch size of a recipe, do you just double all the ingredients also?

Dear Mr. Wizard, I’m a partial mash brewer and formerly brewed single, 5-gallon (19-L) batches using 2.5 gallons (9.5 L) of water in the brew pot. After the boil was complete, we

Dear Mr. Wizard, I’m a partial mash brewer and formerly brewed single, 5-gallon (19-L) batches using 2.5 gallons (9.5 L) of water in the brew pot. After the boil was complete, we