[header] How to preserve a pumpkin [title] Soak the pumpkin in a bleach solution. [step] Mix together 1 tsp (5 ml) of bleach and 1 gallon (4 l) of water. Let the pumpkin soak in this solution for at least 1 hour. 
[substeps] The water is intended to hydrate the pumpkin flesh and prevent it from drying out too quickly. The bleach is an antimicrobial agent that will kill most of the surface bacteria and mold spores on the pumpkin.