Write SQL query to solve given problem: In the Bay Area, what is the most common type of food served by restaurants?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT T2.food_type FROM geographic AS T1 INNER JOIN generalinfo AS T2 ON T1.city = T2.city WHERE T1.region = 'bay area' GROUP BY T2.food_type ORDER BY COUNT(T2.food_type) DESC LIMIT 1