Can you freeze fondant? Yes, absolutely. Wrap it tight in plastic wrap, then foil. It’s like a sugar mummy.
How Long Do Fondant Flowers Keep at Lisa Bassett blog
Frozen fondant lasts six months to a year. Thaw it in the fridge, then at room temp. Do not rush it.
A quick thaw creates condensation chaos. Your fondant will look like it cried tears of sugar.
Signs Your Fondant Has Gone Bad
Fondant doesn't "rot" like bread. It changes in weird ways.
Look for cracks. If it snaps like pottery, it’s too dry to work with. Don’t eat the pottery.
Smell it. Fresh fondant smells sweetly of vanilla or almond. Bad fondant smells musty or like old gym socks. Trust your nose.
Mold? Yes, it happens. Green or black spots mean toss it immediately. Sugar isn’t invincible against a determined mold spore.
If it’s hard as a rock, it’s still safe to eat. But you’ll need a chisel and dental insurance.