Cut strawberries and remove the stem.
Reserve 1 cup of strawberries for later use.
In blender jar,add strawberries and blend to make a puree.
In pot,add strawberry puree,1 cup strawberries,sugar,mix well and cook on low flame for 15 minutes.
Add lemon juice, mix well and cook on low flame for 20-25 minutes and check by ice cold plate technique method.
In boiling water,add air tight jar and sterilize for 5-6 minutes then remove jar from the water and drain on a clean towel.
Transfer strawberry jam to sterilized jar.
Let it cool down for 10 minutes & refrigerate until use. Can be stored in an air tight container for up to 6-7 months.