How to choose foods, interpret labels and quality signals, judge ripeness and understand origin or commercial categories.
A small black spot that is dry and superficial can sometimes be trimmed away if the radish is firm and the flesh directly underneath is clean. If the lesion is sunken, wet, soft, spreading inward, moldy, or foul-smelling, discard the radish.
Wide-open leaves or dry tips usually mean an artichoke is overmature or has lost moisture, not that it is automatically rotten. If it is still firm, dry, and normal-smelling, it can be cooked, although the bracts and heart may be tougher and more fibrous.
A wrinkled or slightly flexible beet is often dehydrated rather than rotten. Cut it open: if the flesh is still firm, clean, and normal-smelling, it can be cooked; wet, mushy, slimy, moldy, or foul-smelling tissue means discard it.
White or pale circles inside a beet are usually a physiological growth pattern called zoning, not rot. If the root is firm, smells normal, and has no wet breakdown, mold, or mushy tissue, the rings themselves do not make it unsafe to eat.
A dry, spongy or hollow center in a radish usually reflects overmaturity and lost eating quality rather than rot. If the tissue is clean and dry it may still be eaten; watery softness, slime, mold, or an off odor are reasons to discard it.
Slightly dented or dry kernels usually mean sweet corn has lost moisture and peak freshness. If the cob still smells normal and has no slime, mold, wet decay, or fermented odor, it can be cooked, though it will be less juicy and tender.
A single dry brown layer in a leek can often be removed if the tissue underneath is firm and clean. A center that is wet, slimy, mushy, collapsing, or foul-smelling indicates deterioration; discard the leek when that damage is extensive.
A few tan or light-brown root tips can appear as sprouts lose freshness. Widespread dark brown or black roots that are soft, wet, slimy, or sour-smelling are not normal fresh-sprout quality and are a reason to discard the batch.
Slightly wrinkled or dried-out ginger is often simply dehydrated. Cut into it: if the flesh is still firm, fibrous, and normally aromatic, it is usable; mold, wet softness, slime, or an unusual odor are reasons to discard it.
A blue-gray tint or distinct blue ring inside ginger can be completely natural in some types of ginger. If the flesh is firm, fibrous, and normally aromatic, with no mold or wet decay, the color alone is not a reason to throw it away.
Dry, fibrous flesh usually points to age, maturity, or moisture loss. If the squash remains firm and clean-smelling without mold or wet decay, it can still be cooked, though the texture may be disappointing.
An onion that is watery or slimy inside has more than a freshness issue. A single dry damaged layer may be removed, but multiple soft, leaking, moldy, or foul-smelling layers are a reason to toss the bulb.