Koushaku to Utsukushiki Ryourinin

Manela escaped from an undesired marriage and hired the Marquis as a chef concealing her status as a Countess. Immediately gained trust from the Marquis because of his brightness and cooking skills. And one day, when he was asked to put drugs in his cooking, he was quick and stopped. Furthermore, although the distance between the two approaches, Manela can never reveal his identity --- !?