Warren Buffett adviser chosen to lead Pampered Chef as next CEO of the Berkshire Hathaway firm

One of Warren Buffett's key assistants is taking on a new role at Berkshire Hathaway as CEO of the conglomerate's Pampered Chef subsidiary.

Berkshire said Monday 30-year-old Tracy Britt Cool will become Pampered Chef's chief executive next month and work with Doris Christopher, who founded the Addison, Illinois, company that sells kitchen gear through direct sales.

Buffett said Cool is an ideal candidate for the job because of her work with other Berkshire subsidiaries over the past five years. Cool serves as chairwoman of four Berkshire subsidiaries.

Cool has already been working since last December as an adviser to Christopher, who will remain Pampered Chef's chairwoman.

Berkshire is based in Omaha, Nebraska, and owns more than 80 subsidiaries in a variety of industries, including insurance, utilities, railroads, retail and manufacturing.