If you're wondering if your cucumber has gone bad, there are a few telltale signs to look out for. Wrinkles and dents in the skin are a sure sign that the cucumber is past its prime. You may also notice discoloration or visible mildew. To be certain, you can do the cut test: cut the cucumber in half lengthwise and check for firm seeds and clear, watery pulp.
If it's soft and watery, it's time to toss it out. If you plan on eating the cucumber within a week, you should check for signs of spoilage. A fresh cucumber should be firm to the touch, while a spoiled one will be soft. Mold growth is another indication that the cucumber has gone bad.
Thin white film on the outside or dark spots on the inside are also signs that it's time to throw it away. If you only see slight signs of deterioration, such as soft spots or wrinkled skin, you can still eat the cucumber as long as you cut away any damaged areas. Moisture or slime on the surface is another common feature of a cucumber that has gone bad. If you find a cucumber with a white, viscous surface, discard it immediately.
In general, a good cucumber should have a bright green color. Discard any cucumbers with dark spots, molds, spots on the skin, or a translucent color as these are all clear signs of deterioration. To prolong its lifespan, buy the firmest cucumber you can find with no soft or wrinkled spots anywhere on the skin and wrap it tightly in plastic before putting it in the refrigerator. When the cucumber goes bad, it's best to discard it immediately as mold can quickly spread throughout the pulp and may be contaminated with bacteria such as salmonella or animal feces.To ensure you pick the freshest cucumbers, look for ones with bright green color and no soft spots or wrinkles on the skin.
Cucumbers that have been grown in sunny weather are watered every day before blooming and watering is reduced on dark and cold days. Overripe cucumbers are not suitable for eating but can still be used to make pickles if they are not too bitter.