Rumours that private equity-owned Quorn Foods could have piqued the interest of the US's WhiteWave Foods caused a stir this week. Neither company was prepared to comment and it may be Quorn's owner Exponent Private Equity has yet to kick off an auction process but, nonetheless, the speculation highlights the potential the meat-free sector could afford branded food manufacturers. Katy Askew examines Quorn's appeal and who could be tempted by this tasty takeover target.