Okay I have a partial solution for you and I'm here searching for the other half.
You need to put any nice or decent quality cooking appliances (STOVE, FRIDGE, GRILL) and put those items in your Household Inventory. Then buy the cheapest quality refrigerator and stove (if using a stove for the meal), then prep.
If making pizza, get the poor quality fridge, uncomfortable or very uncomfortable sim, and have them prep the ingredients, which will then be poor. Then the meal made from them will also be poor especially if the Sim is uncomfy.
The issue I'm having is even with 300% markup I can't seem to get an item that would sell for $100 per serving. I have Bob Pancakes at the park with his stand (because seriously this pack was MADE for him) and Eliza in full suffer / uncomfortable mood and one skill of cooking trying to make meals.
I have not had success with:
Canadian Bacon Pizza (made by bob with low mood and poor quality ingredients)
Matcha Cake
Franks and Beans
Onigiri
Grilled Cheese
Pao de Queijo
Classic Vanilla Cupcakes
Fish Dinner
Arcaraje
Mac And Cheese
Taco Casserole
Hamburger Cake
Vegetable Dumplings
Chicken Chimichurri skewers
Beef Ramen
LilSimsie made a youtube video where Stanley was able to sell Poor Quality Baked Potatoes for $100 somehow, or at least it checked off the goal. I'm going to try the Sfincione pizza option but let it spoil and see if that counts as "poor" quality.
