Our Team

JAMIE Mammano


From the day that Chef Jamie Mammano opened the doors to Mistral in 1997, his biggest culinary venture yet was destined to become a legend of the Boston dining scene. A graduate of the Culinary Institute of America in New York, Jamie established a reputation for himself amongst the country…

Paul Roiff


As one of Boston’s most acclaimed real estate developers, and known for pursuing projects that the real estate “establishment” has often deemed too daring, Paul possesses a drive and vision for urban architectural splendor that has led to the renaissance of some of Boston’s…

Hoshang Dadrass

In 2006, if one asked Hoshang Dadrass what he thought of restaurant business and hospitality, he would shrug it off as a thankless and uninspiring career choice. Little did he realize that his acquired love to value a guest’s absolute satisfaction would entice him to make a drastic decision to accept a duty as central as the General Manager of L’Andana Grill, and then Ostra.

Mitchell Randall

Executive Chef

Executive Chef Mitchell Randall discovered his passion for the culinary arts during his childhood years, assisting his mother in the kitchen of his Scarborough, Maine home. At age 14, Chef Randall began working as a line cook and dishwasher, soon realizing his ultimate career goal would be Executive Chef. Learning the…

Lisa Flores


Lisa Flores has been an integral part of the success of the Columbus Hospitality Group for over 17 years. A Texas native, Lisa moved to Boston to attend Boston University where she graduated with a Bachelor of Science in Business Management and a concentration in International Management. She was hired as…

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