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FOOD STORAGE GUIDE

How long does cornstarch last?

SOURCE USDA FOODKEEPER · DATASET V128

Cornstarch keeps about 18 months in the pantry, per USDA FoodKeeper guidance.

WhereHow longNotes
Pantry18 monthsAfter opening.

Data: USDA FoodKeeper, dataset version 128. Windows assume typical products stored properly.

Storage windows are general guidance for typical products stored properly — not a substitute for label dates, safe-handling instructions, or your own judgment. When in doubt, throw it out.