<human>: Is it true that a ham is cured by the smoke from burning wood?
<bot>: Yes, a ham is cured by the smoke from burning wood. Smoke contains carbon dioxide and other gases that help to preserve meat by slowing down the bacterial growth process. Curing involves preserving food through exposure to air, salt, or smoke. Ham is preserved in curing chambers for months at a time. So, a ham is cured by the smoke from burning wood.