Peel the mangoes and roughly chop them.
Add the chopped mangoes in a mixer jar and blend them into a smooth puree.
In a non stick saucepan add the mango puree, sugar and cook for 10-12 mins in medium flame stirring it continously till the jam turns thick.
Remove the jam from heat and allow it to cool down completely.
Add the lemon juice, stir and mix well.
Transfer the jam in a sterilized glass jar. Use a clean spoon on every servings.