Red Pepper And Ginger Marmalade

• 12 mediu
• 4 tablesp -oons
• 3 oranges
• 1/2 butter (unsalted)
• 1/4 wide (lengthwise)
• 800 gr bell peppers (red)
• 180 ml orange juice (fresh)
• 120 gr ginger (fresh)
• 120 ml extra-virgin olive oil
• 38 gr sugar