Please list the business ID of the Yelp_Business with the highest Elitestar rating under the category "Food".
under the category "Food" refers to category_name = 'Food'
SELECT T2.business_id FROM Categories AS T1 INNER JOIN Business_Categories AS T2 ON T1.category_id = T2.category_id INNER JOIN Business AS T3 ON T2.business_id = T3.business_id WHERE T1.category_name LIKE 'Food' ORDER BY T3.stars DESC LIMIT 1