To maintain freshness, it is advisable to store leftover ingredients individually, considering their specific storage needs. Here are some guidelines: Cheese: Ensure cheese is tightly wrapped in plastic wrap or stored in airtight containers when placing it in the refrigerator. Cured meats: Similar to cheese, cured meats should be sealed in airtight containers or wrapped in plastic wrap before refrigeration. Fruits: Store fruits in the refrigerator using airtight containers or cover them with plastic wrap to keep them fresh. Crackers or bread slices: To preserve their crispness, store crackers or bread slices in airtight containers.