The useful answer: Choose the potato for the dish: floury for a fluffy result, waxy when the pieces need to hold together. Inspect the whole bag and pass over green or deteriorating potatoes.
Start with the finished dish
A potato is not just a potato when you want crisp roast edges, a smooth mash or a salad that holds its shape. The useful question at the produce display is what you want it to do in the pan. You can buy an excellent potato and still be disappointed if its texture does not suit the recipe.
The original BuyerFood guide explored this familiar ingredient from shopping to cooking. For an American grocery trip, start with the names you are likely to see: russet, yellow, red, white and fingerling. These are useful shopping descriptions, but color alone does not describe every variety. The package’s suggested uses can help when the variety is unfamiliar.
My approach is to decide on the meal before deciding on the bag. Ten pounds of a bargain variety is less useful than a smaller quantity you can cook well and use while it is in good condition.
Which potato belongs in your basket?
Russets are a familiar choice for fluffy baked potatoes and mash. Their relatively floury texture also works well for many fries. If you want a baked potato with a dry, fluffy interior, give it room in the oven and follow a suitable recipe; wrapping it tightly in foil traps moisture and changes the result.
Waxy varieties tend to hold together better in salads and simmered dishes. Many red potatoes and fingerlings are useful here, although the individual variety still matters. Yellow potatoes often sit comfortably between floury and waxy: a practical starting point for roasting, gratins and a creamy mash.
“Baby” describes a small potato; it is not a promise of a particular flavor or nutrition advantage. Similarly, a purple or red skin can make a dish attractive without telling you how the flesh will behave. For mixed roast vegetables, choose potatoes of a similar size or cut them consistently so that the pieces finish together.
Look past the clean packaging
Choose firm potatoes without wet patches, decay or significant damage. Look through the whole bag, especially the lower corners where moisture can collect. Loose potatoes let you inspect each one and buy the exact quantity you need; bagged potatoes may offer a lower unit price if the whole bag is useful.
Pass over green, badly sprouted or shriveled potatoes. Greening is a warning associated with light exposure and potentially elevated glycoalkaloids; cooking is not a reliable way to make a suspect potato safe. There is no useful household rule that “half green is acceptable.” Do not taste a questionable potato to test it, and discard one that tastes bitter during a meal.
A little dry soil is not the same thing as decay. Wash potatoes under running water and scrub them before preparing them, even if you plan to peel them. Avoid soap or detergent. Clean the work surface after dealing with soil and before preparing ready-to-eat ingredients.
Give the bag somewhere sensible to live
For ordinary household storage, choose a dark, cool place with ventilation and check the potatoes regularly. Avoid a sunny counter, a hot cupboard next to the oven or a sealed bag that holds condensation. Exact storage conditions and useful life vary with the variety and how the crop was handled before purchase.
If your home has no suitable cool space, buy less at a time. The goal is not to imitate a commercial store room; it is to stop a large forgotten bag becoming your most expensive potato purchase. Keep the oldest sound potatoes visible and remove spoiled ones promptly.
Raw potatoes generally do not freeze into an appealing all-purpose ingredient. Prepared potato dishes can be a better freezing project, using a recipe intended for that purpose. Freezing does not rescue potatoes that were already deteriorating.
Cook for texture, then put leftovers away
For mash, cook evenly sized pieces until tender, drain well and mash without prolonged high-speed processing, which can produce a gluey texture. For roasting, space the pieces out: a crowded pan holds steam and makes browning harder. These small technique choices often matter more than an expensive variety.
Once cooked, potatoes need the same attention as other perishable leftovers. Refrigerate promptly in shallow containers and use refrigerated leftovers within three to four days. Do not leave foil-wrapped baked potatoes on the counter for an extended period. A tidy storage plan is part of the recipe, not a task for tomorrow.
The useful purchase is the potato that suits dinner, survives your storage conditions and reaches the plate. Start there, and the long list of varieties becomes much easier to navigate.
Sources and editorial note
Adapted for US readers from the original Italian BuyerFood article, published 2023-11-28. This is an updated adaptation, not a literal translation.
Health Canada: Glycoalkaloids in Foods
FDA: Selecting and Serving Produce Safely
USDA FSIS: Leftovers and Food Safety
US editorial draft prepared with AI assistance for Simone Paciaroni’s review. Sources checked September 13, 2026. This preparation date is not a claim of completed expert review. New recipe adaptations have not been kitchen-tested. Follow product-specific instructions and recall notices.