It is not a combination of innate and learned behavior, because the the person is naturally the way he/she is. Human behavior can be common, unusual, acceptable, or unacceptable. Humans evaluate the acceptability of behavior using social norms.
Use a large clay pot or a casserole (Don’t use cast iron or metal ones though, not suitable for cooking vinegar.)
Maintenance of homeostasis usually involves negative feedback loops. These loops act to oppose the stimulus, or cue, that triggers them.