Mulligan's Stew is a PBS kid's show so old - that even the Golem doesn't remember when it was on. Here's a hint, though - it has two Washington Senators in it.
It has all the trappings of very early '70s educational television: bad animation, puppets, clumsy attempts at ethic diversity, an adult hanging around kids with no questions asked... and a mostly-white children's rock band singing a song about breakfast to a cranky black couple.
The whole thing is sponsored by that ultra groovy organization - the 4H Club!