Re: Dineout - I want to own AND chef my restaurant
@Princessciji Hi! I added a "me too" because I would love to have one of my played sims own a restaurant AND be the chef. One thing to keep in mind is that it would be really difficult to do all the owner interactions with customers and staff if there is only one sim owner who also has to do all the cooking. Those owner interactions are necessary for increasing a restaurant's rating. So, I think this would only work well if the restaurant owner household has more than one sim.
If you just want to have your sim make money from cooking and selling their food, I second the suggestion by @PipMenace to get Home Chef Hustle. I've had a lot of fun with the pack. While I haven't created a pseudo-restaurant, I did create a lot specifically for selling food and drinks that my sim made. Your sim can sell food (and drinks or other items) on their home lot or put the food stand in their inventory and sell from any community lot. That is a big perk since your sim doesn't have to buy a separate lot and it's actually kind of nice not having to worry about the customer / staff satisfaction or the rating. You control what food / drinks are prepared and also the markup for what sims pay. I know it's not what you were asking for but maybe something to consider.