Hi Guys,
Cob oven question.
I found what I thought was "sand" to use to build a
cob oven, but it turns out that it is likely to be a mix of lime and sand. It's a white powder, and sticky when wet and easily washable. I've already made a batch of cob with it and right now, it is looking like a very white cob.
I've seen this lime plaster used externally on cob ovens. But little info on lime plaster internally, or incorporating a significant amount of lime together with your cob where it will be in direct contact with the heating surfaces. (Expecting oven temps to get to about 500-600 degrees Celsius)
I'm just slightly concerned from a safety perspective. I don't want to be using anything that could leach into food that is being cooked etc.
Otherwise I'm probably going to redo the whole thing with proper "brown cob".
Cheers,
Nick
