Can I file a lawsuit on a fast food chain that had roughly nine hairs in my latte?

What damages do you think you deserve?

I think that the minimum is 10 hairs. Actually, yes, you can sue. However, what are your actual damages? No lawyer would be interested in pursuing it because it is too small.

Contact the corporate or head office for the fast food chain to see if a monetary nuisance settlement can be reached without litigation.

You were not injured, so it is just an inconvenience. You could call the health dept and complain, which will trigger an inspection, and report the local establishment to the national headquarters of the chain, and they will take action to force the local establishment to clean up its act.

You have no damages. You have more than been repaid for your contract loss. You can sue and it will take some lawyer about $10000 worth of time to marshal a case through superior court.

You can file a lawsuit, but in my opinion, you probably will not get much more than they have already given you.

You are better off filing a small claims action that will get you a hearing faster and won't cost you as much in time or stress. The jurisdiction in small claims is $10,000 and even if a jury were to find fast food chain was negligent, which is not a slam dunk, however, even assuming they do they are not going to award much in the way of damages. If they like you could be as much as $2,500 if you testify that you suffered a large degree of emotional distress, which the jury finds is reasonable, or $1 is they think you are being a whiner. Small claims will cost you $50 to file and will typically get hearing date within 60-75 days depending on where you live and what jurisdiction you live in.