My Family's Epic Lamb Roast

• One bone-in 2kg leg of lamb

• 2 onions, finely grated

• 2 carrots, finely grated

• 4 cloves garlic, minced

• 1 tsp. mastic*, crushed into a powder (mesteka in Arabic)

• 1 tsp. ground cardamom

• 2 tsp. mixed spice

• 1 tsp. crushed pepper flakes (optional)

• 1 ½ tsp. salt