Dishwashers or ovens
Humid spots (like above the sink)
When to Say Goodbye: Signs Your Butter Has Gone Bad
Even well-stored butter won’t last forever. Watch for these red flags:
Rancid smell – Sharp, sour, or “off” odor (not just creamy anymore)
Sour or bitter taste – Take a tiny lick. If it tastes “wrong,” toss it.
Discoloration – Yellow turning pale, greyish, or spotty
Mold – Fuzzy spots = definite discard (even if only on surface—butter can trap mold roots)
Note: A little darker color around edges? That’s oxidation—not harmful, but a sign it’s aging.
Speed Up Softening Without Risk
Try these safer methods:
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