Then add the lemon juice and cook, stirring, on a medium fire for 10 minutes. Then increase the flame and boil for 5 minutes. Then decrease the flame to low and cook for about 20 minutes or until the tomato jam thickens (or it reaches 105°C - 220°F). Do not make it too dry or it will become hard once it cools down. Add the Orange Blossom water and mix well.