|After washing and hulling strawberries, mash the fruit. Let the strawberries and the
lemon juice come to a boil. Reduce heat and cook for 5-10 minutes, until softened. Add
sugar and mix well with fruit mixture until sugar is dissolved. Boil the mixture, without
stirring, for about 15 minutes. Turn off heat and using a thermometer check temperature.
It should reach 104 Centigrade (220 Fahrenheit). Using a slotted spoon dispose of the
foam. Let the jam cool slightly. Fill the jam into clean and heated jars.