A celebrity chef who recently departed from a prestigious Lake Hayes restaurant has apologised for "inappropriate behaviour" towards his former staff and colleagues. The  Otago Daily Time s reported last week that Vaughan Mabee, a former Masterchef host, had left Amisfield — regarded as a Michelin star contender — to pursue ‘‘international opportunities’’. He had been at the restaurant for 15 years. In an emailed statement, the acclaimed Arrowtown restaurant’s chief executive, Simon Toneycliffe, confirmed Mabee resigned in February. ‘‘Amisfield does not comment on the private affairs of its current or former staff in order to protect their privacy.’’ Mabee has not answered calls but sent a statement apologising for his behaviour. "I unreservedly apologise to my former staff and colleagues at work for my inappropriate behaviour to them or any inconsiderate comments made," the statement said. "I love and respect all my team at the restaurant and meant no malice or harm with my actions.…