Bay seniors interested in an Oktoberfest that doesn’t include polkas and bratwurst may want to sample the inventive version being staged under the Central Freeway on Sunday October 13. From 10 am to 7 pm the food will be courtesy of popup locavores from Asian street treats to Dutch stroopwafels to plumeria cookies. If you’ve ever wanted to take a kimchi or gomasio workshop, this is the place to try it. And for athletes there’s a 4Square tournament and several rounds of musical chairs. $5.