I have asparagus, broccoli, oignons, bell pepper in my fridge. They usually last a week. I've bought a lot of salmon, beef, sausages, chicken and eggs, they usually last two weeks. I have lots of salmon roes (and they last long). I have many many cheeses (a lot of them), eggplant caviar, hummus and guacamole. I drink kefir a lot (that's my drinkable dairy). I still have a couple of fruits. These are my fresh products.
My longlasting storable products are soups, rice, pasta, paté, canned fishes (herring, tuna, anchovy), saucisson, pollen. I have lots of regular spices, exotic spices, crackers, cereals, lentils, etc.
With all of this, there are many possible combinations and many great meals (even better than restaurants), yet these are quite cheap products (except for salmon roes )
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Are you gonna sell them afterwards?