Want to try a coffee creation that a “Top Chef” star calls a “true masterpiece that’s the result of my passion for flavors”? Then head to Oakland’s The Caffè by Mr. Espresso, which is featuring not one but two specialty drinks designed by “Top Chef” alums this month into October. Mr. Espresso is an Italian immigrant-founded coffee enterprise that dates from the 1970s and is known for roasting beans with oak wood. The company opened its first coffee shop downtown this spring at 1120 Broadway and, in the spirit of local collaboration, is featuring two Oakland chefs with reality-TV cred and their caffeinated inventions.