stone 's biggest priority is to nourish his children with healthy food .
he and wife lindsay have two boys , hudson , 3 , and emerson , 7 months .
` i do n't want him to have the nitrates and c *** that 's in a hot dog , ' he says .
he wants parents to expose their children to a range of healthy food .
stone is in australia to promote his cookbook , good food , good life .
photos of stone cooking and gardening with his wife feature in the book .