Here's what you'll need...
Add berries, sugar, and lemon juice to a large pot.
Smash berries and mix with other ingredients to make a uniform slurry.
Turn on heat, bring to a boil, and maintain a slow rolling boil for 15 minutes, stirring frequently.
Remove from heat at 15 minutes, or when temperature reaches 218°F/103°C on an instant-read thermometer.
Can according to your preferred method.
Store once cooled and enjoy!