I suspect the separate burner is a better approach. People use such torches for other things though (e.g. sous vide, but usually with a deflector); I don't kno

I suspect the separate burner is a better approach. People use such torches for other things though (e.g. sous vide, but usually with a deflector); I don't know if it's really a risk. I haven't tried it just happened to see the article a few days ago and remembered.