We are opportunistic shoppers. Pretty much no meal planning beyond a day or two except for parties/guests. We make everything from scratch or modified scratch, and everything we need is in the fridge pantry, chest freezer or garden. When I go out for things like milk and cheese,we will get more tomato sauce if it is on sale. Last week I bought 10 bottles of salad dressing for $1 each.Most of it will get left at potlucks this fall. If seafood looks good, ceviche is on the menu. My wife gets all the paper, cleaning and hygiene stuff. The kids cook and prep together with us.It’s actually a lot of fun. Not for someone who doesn’t have time.
One thing, if your designated shopper is not good at picking out fruits, vegetables or meats they probably never will be. Better do most of it yourself rather than be frustrated all the time.