Wash and hull the strawberries.
Cut the bigger berries into quarters and smaller berries into half. Discard tender and bruised part of the fruits if any.
Place the chopped fruits in a deep thick bottomed bowl and add the sugar. Mix well with a spoon
Let it rest for 4-5 hours. Keep mixing the fruit every half hour with a spoon.
After 5 hours the sugar would have completely dissolved and the fruits would have softened.
Place a steel or ceramic plate in the freezer.
Place the fruit bowl on the stove and cook over low flame.
Using a masher keep mashing the strawberries gently while they cook.
After 5-7 mins add lemon juice and keep cooking over low flame till the mixture starts to become glossy.
This will take 12-15 mins.
Take the plate from the freezer and drop a dollop of jam on it and let it be for 30 seconds.
Draw a line through the middle with your finger. If the line stays put the jam is of the right consistency.
If the line merges together then the jam is still thin in consistency, so cook for another 4-5 mins over low flame. Strawberry Jam is ready.
Take the bowl off the stove and let it cool completely.
Transfer to a sterilized clean jar and store in the refrigerator. Always use a clean spoon.