Write SQL query to solve given problem: What was the inspection type when El Aji Peruvian Restaurant got highest inspection score?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT T1.type FROM inspections AS T1 INNER JOIN businesses AS T2 ON T1.business_id = T2.business_id WHERE T2.name = 'El Aji Peruvian Restaurant' ORDER BY T1.score DESC LIMIT 1