I wonder how it went when our ancestors heated food for babies to eat on a burning camp fire? Was that a factor in high child mortality?

I wonder how our ancestors used a material not even developed yet without getting to to melt on an open fire.

I mean it's difficult to precisely gauge when cooking food on a camp fire how hot it'll be for a baby to eat.

I guess they would do it by finger touch then.

The practice of using utensils exclusively and not touching food with hands is a relatively recent thing.

I wonder how our ancestors used a material not even developed yet without getting to melt on an open fire they haven't discovered yet.

I'm pretty sure children just breastfed for longer before eating solid foods.

Our pediatrician said there was no reason to heat formula. We used powdered formula, just put it in a bottle with "cold" (i.e. unheated) tap water and shook it up right before feeding. Also great for traveling, you don't need a cooler/ice packs to keep mixed formula cool, just bring a bottle of water and mix with the powder as needed. Not storing formula in the bottles also means you don't need to sterilize bottles. Just wash them in the dishwasher and store them empty/dry. We never heated baby food in either, just opened the jar and fed it.

Same here, we never heated up milk/formula, it seems to be a preference thing.

I think baby food in this context is not formula, but puréed veggies etc.

Yes, but in this case I'm referring to formula, food, or breast milk that's been sitting in a fridge.

You don't need to "heat" it, but some babies are more receptive if its not cold.