On Wednesday afternoon, he was unloading boxes of helmets that will be auctioned off or sold at the event Saturday night at the Bay Area's Cow Palace.
"It's not glamorous, but God it feels good," he said.
The palace was a concert venue where the Beatles, the Rolling Stones and Jefferson Starship played, Kostroski proudly pointed out.
The Taste of the NFL started in Minneapolis in 1992, in the atrium near what was Leeann Chin's downtown Minneapolis restaurant.
Kostroski, who now runs the Franklin Street Bakery with his business partner, said back then he was on the Super Bowl Host Committee and trying to lure chefs north for the event.
"The challenge was how to make people come to Minnesota in January, particularly the southern chefs," he said.
Kostroski pitched them on volunteering their time, bringing their own food and "freezing their butts off," he said.
And it worked. Chefs came from the 28 NFL cities at the time. The reward: Food banks in all those cities benefitted.