Buy: Organic berries
Organic berries would be the only exception to the fresh produce rule. If they are in season, it is possible to get a great deal on them. Berries are very healthy but pricey, so make sure to snag this deal.
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Skip: Flour, baking powder, and dried yeast
Baking ingredients such as dried yeast, baking powder, and flour come with a short shelf life. You should not buy them in bulk because they tend to go bad quickly. Ditch the big purchase and get them in smaller amounts instead!