Wash the strawberries thoroughly, remove the stems, and cut them into bite-sized pieces.
Place the cut strawberries and sugar into a pot and mix well.
Simmer over medium-low heat, skimming off any foam or impurities that rise to the surface.
Stir and simmer until the mixture thickens to a jam-like consistency.
Add lemon juice, mix well, and let cool.
Transfer to sterilized glass jars for storage.