The avocado toast at the Energy Bar Cafe in downtown Denver. (Provided by Energy Bar Cafe) Chef Thach Tran has shifted to the healthier side of cooking. After six years working for the Secret Sauce restaurant group in Denver, Tran has left his job as executive chef of Ace Eat Serve to fully take over his own spot, the Energy Bar Cafe in the Colorado Athletic Club-Tabor Center downtown. “The cafe fell into our laps,” said Tran, explaining how the manager of the gym contacted him last year after he signed up for a membership.