Possible Clues:

• ___ Martin (brandy brand)
• "Ratatouille" rat who aspires to be a chef
• Name on a Cognac bottle
• Pixar's "Little Chef"
• He has a Ratatouille Adventure ride at Epcot
• __ Martin cognac
• First name in cognac
• "Ratatouille" rat who loves gourmet food
• Rap artist ___ Ma
• Rat voiced by Patton Oswalt in 'Ratatouille'