FogCityFog/FlickrH. Joseph Ehrmann of Elixir will demo Perfect Punch.The Center for Urban Education About Sustainable Agriculture (CUESA) is up to its delicious tricks again with a summer-friendly event this Friday, June 26. The Summer Sausage and Perfect Punch class features three of the Bay Area's experts in meat and booze: chef Ryan Farr (4505 Meats), H. Joseph Ehrmann (proprietor of Elixir), and Steve McCarthy (Prather Ranch Meat Co.). Farr will lead a sausage-making and grilling demonstrati