Crab Cakes With Basil Mayonnaise

• 40 basil leaves (whole)
• 3 eggs
• 2 stalks celery (finely chopped)
• 350 ml mayonnaise
• 290 gr dry bread crumbs
• 260 gr lump crabmeat picked clean
• 80 gr onion (finely chopped)
• 45 gr flour
• 34 gr chives (chopped)
• 30 ml olive oil