I've looked at non-food sites and can't get a clear answer so I'd like to combine this. We're flying from San Francisco to Barcelona with a three hour layover in Frankfurt. It will be lunchtime. I understand the Frankfurt airport is huge and can be confusing. First of all, are transitting passengers kept in a secure area and if so is there food available to buy? If not sequestered and assuming a second go-through of security, three hours doesn't seem like a ton of time. Any suggestions for quick but tasty food? After an 11 hour flight, something solid is going to feel very good. TIA.
PS: I understand that we'll clear immigration but not customs until we reach Barcelona.