This appears to be the very short-lived CBS TV series Otherworld.
From the Wikipedia description:
In the first episode, the Sterling family (Hal, June, Trace, Gina, Smith) take a tour of the interior of the Great Pyramid of Giza at the same time as a once-in-ten-thousand-years conjunction of the planets. Inside - Hal not willing to give in to the guide's money scam - they are abandoned by their guide, and as they try to get out, they are mysteriously transported to another planet which may or may not be in a parallel universe.
There's a daughter and two sons, which fits what you describe in your query (although I can't vouch for the handsomeness of the teen son).
Also, by searching "Good food" in conjunction with the title, I found this site, which has a comment at the very bottom:
I remember my brother and I watching what was I think the pilot episode. The family is still trying to figure out what happened and the wife goes to the market and finds all the cans marked “Good Food”. When she asks a clerk what it is in the cans he simply says matter-of-factly “It’s ‘Good Food'”, as if that completly answered her question.
After that for the longest time whenever someone asked what a given dish was my brother would pipe up matter-of-factly, “It’s ‘Good Food'”.