Prepare the berries: Gently rinse raspberries and pat dry. Any stray leaves get tossed; the rest go straight into your pot.

In a medium saucepan, combine raspberries, sugar, lemon juice, zest (if using), and salt. Stir to coat the berries and let them sit for 10 minutes. This is the pre-swim workout—let the flavors wake up.

Cook over medium heat, stirring frequently. Bring to a gentle boil, then reduce heat to a simmer. Skim off any foam that forms on top—fun, but not tasty-looking.

Simmer 15–20 minutes, mashing berries occasionally with a spoon or potato masher. You want a thick, jammy consistency. If you want ultra-smooth jam, pass through a sieve (but who has time for that? chunky is charming).

Test for doneness: A spoon runs cleanly off the surface, and a wrinkle in the jam on a cold plate sticks around for a moment. If it’s not there yet, cook a few more minutes and test again.

Remove from heat and ladle into hot, sterilized jars. Seal with lids and let them cool. You’ve earned a jar of victory.