Levi Roots originally offered 20% equity when he pitched Reggae Reggae Sauce on Dragon's Den.
Levi Roots, the stage name of Keith Valentine Graham, presented his Reggae Reggae Sauce business on the British programme. The pitch became one of the show's best-known examples of a food brand attracting investment and then expanding into a major commercial business.
Equity is the ownership stake offered in exchange for investment. In this case, the original proposal was for a 20% share. The televised deal involved investment from Peter Jones and Richard Farleigh, who together offered money for a larger share than Roots initially proposed.
The percentage in the pitch should not be confused with the final ownership arrangement. Negotiations can change the amount of equity requested or accepted, and a television agreement may also depend on due diligence after filming. The question asks specifically about Roots's original offer.