Someone who cooks often but only in their home. They tend to not be as efficient or "perfect" as the more professional types of people, which causes them to not be as tense about the way something is measured, cut, etc. These people are the most likely to "stray from the recipe" looking for a simpler way, or sometimes better taste.
Mary: Whenever I eat Frankie's food it always tastes so odd!
Derek: Yea, she adds a lot of strange things, I think shes a Home Cook.