Tostadas: 60 days.

Is it bad to eat expired tostadas?

They should be safe to eat, even if stale, for up to 2-3 months. However, if you notice moisture, mold, or any odd scents, you should discard them.

How do you know when tostadas are bad?

One visible sign that your tortilla might be going bad is the presence of spots of mold on their surface. Additionally, some notable signs of outdated tortillas would be dark specks, discolorations, bad or off smell, etc. Once you see these, please throw them right away.