Sesame Chicken Fingers With Plum Sauce

• 12 perserves (plum)
• 1 garlic clove
• 1/2 crosswise (into)
• 800 gr chicken breasts
• 425 gr seasoned bread crumbs
• 350 ml buttermilk
• 65 gr sesame seeds
• 55 gr butter
• 30 ml lemon juice
• 22 ml dry mustard