Potato Salad

Contrary to popular belief, it’s not the mayonnaise but the cooked potatoes in potato salad that pose the highest risk. Potatoes are low-acid foods, making them highly susceptible to bacterial contamination if left at room temperature for extended periods. Refrigerate promptly and consume within five days.
Rice

Cooked rice can harbor Bacillus cereus spores, which survive cooking and can produce toxins if rice is left at room temperature. These toxins can cause food poisoning symptoms like nausea and vomiting. Refrigerate rice within two hours of cooking and consume within a few days.
Garlic in Oil

Homemade garlic-in-oil mixtures can create an anaerobic environment conducive to the growth of Clostridium botulinum, the bacteria responsible for botulism. Store such mixtures in the refrigerator and use within a week to minimize risk.
Home-Canned Vegetables

Improperly canned vegetables can lead to botulism outbreaks due to the growth of Clostridium botulinum. Ensure proper canning techniques, including adequate pressure and sterilization, to prevent contamination.
Leftover Beans

Cooked beans can become a health hazard if not stored properly. Bacteria can grow if they’re left too long, causing potential illness. Refrigerate beans promptly and reheat them until they’re steaming hot.
Soft Cheeses

Soft cheeses like brie, camembert, and feta are more susceptible to bacterial contamination than hard cheeses. If not stored properly, these cheeses can develop Listeria monocytogenes, a bacterium that can cause severe food poisoning, especially in pregnant women, the elderly, and those with weakened immune systems. Store soft cheeses in the refrigerator and consume them by their expiration date.
Cold Cuts

Cold cuts spoil quickly and can harbor harmful bacteria if not stored properly. Refrigerate cold cuts immediately after purchase, keep them in the coldest part of your fridge (below 40°F), and use opened packages within 3 to 5 days. When in doubt, it’s safer to discard them.