Market Salad With Parmesan Brittle

• 6 plates
• 2 parmesan brittles
• 1 radicchio head
• 1 romaine lettuce
• 130 gr all purpose flour
• 110 gr butter
• 120 ml olive oil
• 40 gr parmesan cheese
• 30 ml wine vinegar (red)
• 10 ml dijon mustard