Summer Mixed Berry Jam

mixed berry jam made from summer fruits in a jar with a spoon

This mixed berry jam uses summer fruits like blueberries, blackberries, raspberries and strawberries to make a delicious spreadable jam perfect for topping biscuits and scones!

  • Author: Sarah | AwayFromTheBox
  • Prep Time: 5 minutes
  • Cook Time: 1 hour
  • Total Time: 1 hour 5 minutes
  • Yield: 5 - 8oz jars 1x
  • Category: Condiment
  • Method: Stove
  • Cuisine: American



1lb blackberries, fresh or frozen

1lb blueberries, fresh or frozen

1lb raspberries, fresh or frozen

1/2 lb strawberries, fresh or frozen, hulled and halved

3 c. granulated sugar

zest from 1 lemon

1/4 c. lemon juice

2 tsp vanilla (optional)


In a large stockpot or saucepan, place all ingredients (blackberries, blueberries, raspberries, strawberries, sugar, lemon zest, lemon juice and vanilla) and stir together. Bring to a simmer over medium-low heat.

Cook for 45 minutes, stirring occasionally. Place a large spoonful on a small place and put it in the freezer for 10 minutes. Continue cooking the rest of the jam. Run a finger through the frozen jam. If it is thick and stays in place, the jam is ready to remove from heat. If it still appears watery, cook for another 15 minutes.

Remove from heat and serve at room temperature, or transfer to glass jars or another airtight container.


I like to use a little bit of vanilla in my jam, jelly, and syrup recipes. It adds a little more depth of flavor and makes it taste sort of like a dessert.

Without preserving, this recipe lasts for 2 weeks in the fridge. See post for tips.

Strawberries contain a lot of water. If you add more than the recipe directs, it will take longer for the jam to cook to the correct consistency.

Keywords: mixed berry jam, summer berry jam, berry jam, jelly, jam, preserves

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